diff --git a/Source/Core/Windows/LinedefEditForm.Designer.cs b/Source/Core/Windows/LinedefEditForm.Designer.cs
index a2772db..a850537 100644
--- a/Source/Core/Windows/LinedefEditForm.Designer.cs
+++ b/Source/Core/Windows/LinedefEditForm.Designer.cs
@@ -28,567 +28,567 @@ namespace CodeImp.DoomBuilder.Windows
 		/// </summary>
 		private void InitializeComponent()
 		{
-			this.components = new System.ComponentModel.Container();
-			System.Windows.Forms.Label label2;
-			System.Windows.Forms.Label label3;
-			System.Windows.Forms.Label label4;
-			System.Windows.Forms.Label label5;
-			System.Windows.Forms.Label label8;
-			System.Windows.Forms.Label label9;
-			System.Windows.Forms.Label label10;
-			System.Windows.Forms.Label label11;
-			System.Windows.Forms.Label label12;
-			System.Windows.Forms.Label activationlabel;
-			this.labelFrontTextureOffset = new System.Windows.Forms.Label();
-			this.labelBackTextureOffset = new System.Windows.Forms.Label();
-			this.cancel = new System.Windows.Forms.Button();
-			this.apply = new System.Windows.Forms.Button();
-			this.actiongroup = new System.Windows.Forms.GroupBox();
-			this.argscontrol = new CodeImp.DoomBuilder.Controls.ArgumentsControl();
-			this.actionhelp = new CodeImp.DoomBuilder.Controls.ActionSpecialHelpButton();
-			this.hexenpanel = new System.Windows.Forms.Panel();
-			this.activation = new System.Windows.Forms.ComboBox();
-			this.action = new CodeImp.DoomBuilder.Controls.ActionSelectorControl();
-			this.browseaction = new System.Windows.Forms.Button();
-			this.flagsgroup = new System.Windows.Forms.GroupBox();
-			this.flags = new CodeImp.DoomBuilder.Controls.CheckboxArrayControl();
-			this.idgroup = new System.Windows.Forms.GroupBox();
-			this.tagSelector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagSelector();
-			this.frontside = new System.Windows.Forms.CheckBox();
-			this.frontgroup = new System.Windows.Forms.GroupBox();
-			this.frontsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
-			this.frontlow = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.frontmid = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.fronthigh = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.frontTextureOffset = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedIntControl();
-			this.backside = new System.Windows.Forms.CheckBox();
-			this.backgroup = new System.Windows.Forms.GroupBox();
-			this.backsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
-			this.backlow = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.backmid = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.backhigh = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
-			this.backTextureOffset = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedIntControl();
-			this.panel = new System.Windows.Forms.Panel();
-			this.tooltip = new System.Windows.Forms.ToolTip(this.components);
-			label2 = new System.Windows.Forms.Label();
-			label3 = new System.Windows.Forms.Label();
-			label4 = new System.Windows.Forms.Label();
-			label5 = new System.Windows.Forms.Label();
-			label8 = new System.Windows.Forms.Label();
-			label9 = new System.Windows.Forms.Label();
-			label10 = new System.Windows.Forms.Label();
-			label11 = new System.Windows.Forms.Label();
-			label12 = new System.Windows.Forms.Label();
-			activationlabel = new System.Windows.Forms.Label();
-			this.actiongroup.SuspendLayout();
-			this.hexenpanel.SuspendLayout();
-			this.flagsgroup.SuspendLayout();
-			this.idgroup.SuspendLayout();
-			this.frontgroup.SuspendLayout();
-			this.backgroup.SuspendLayout();
-			this.panel.SuspendLayout();
-			this.SuspendLayout();
-			// 
-			// label2
-			// 
-			label2.AutoSize = true;
-			label2.Location = new System.Drawing.Point(15, 26);
-			label2.Name = "label2";
-			label2.Size = new System.Drawing.Size(40, 13);
-			label2.TabIndex = 9;
-			label2.Text = "Action:";
-			// 
-			// label3
-			// 
-			label3.Location = new System.Drawing.Point(255, 13);
-			label3.Name = "label3";
-			label3.Size = new System.Drawing.Size(83, 16);
-			label3.TabIndex = 3;
-			label3.Text = "Upper";
-			label3.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label4
-			// 
-			label4.Location = new System.Drawing.Point(346, 13);
-			label4.Name = "label4";
-			label4.Size = new System.Drawing.Size(83, 16);
-			label4.TabIndex = 4;
-			label4.Text = "Middle";
-			label4.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label5
-			// 
-			label5.Location = new System.Drawing.Point(437, 13);
-			label5.Name = "label5";
-			label5.Size = new System.Drawing.Size(83, 16);
-			label5.TabIndex = 5;
-			label5.Text = "Lower";
-			label5.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label8
-			// 
-			label8.Location = new System.Drawing.Point(437, 13);
-			label8.Name = "label8";
-			label8.Size = new System.Drawing.Size(83, 16);
-			label8.TabIndex = 5;
-			label8.Text = "Lower";
-			label8.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label9
-			// 
-			label9.Location = new System.Drawing.Point(346, 13);
-			label9.Name = "label9";
-			label9.Size = new System.Drawing.Size(83, 16);
-			label9.TabIndex = 4;
-			label9.Text = "Middle";
-			label9.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label10
-			// 
-			label10.Location = new System.Drawing.Point(255, 13);
-			label10.Name = "label10";
-			label10.Size = new System.Drawing.Size(83, 16);
-			label10.TabIndex = 3;
-			label10.Text = "Upper";
-			label10.TextAlign = System.Drawing.ContentAlignment.TopCenter;
-			// 
-			// label11
-			// 
-			label11.Location = new System.Drawing.Point(6, 40);
-			label11.Name = "label11";
-			label11.Size = new System.Drawing.Size(80, 14);
-			label11.TabIndex = 13;
-			label11.Text = "Sector Index:";
-			label11.TextAlign = System.Drawing.ContentAlignment.TopRight;
-			// 
-			// label12
-			// 
-			label12.Location = new System.Drawing.Point(6, 40);
-			label12.Name = "label12";
-			label12.Size = new System.Drawing.Size(80, 14);
-			label12.TabIndex = 16;
-			label12.Text = "Sector Index:";
-			label12.TextAlign = System.Drawing.ContentAlignment.TopRight;
-			// 
-			// activationlabel
-			// 
-			activationlabel.AutoSize = true;
-			activationlabel.Location = new System.Drawing.Point(6, 11);
-			activationlabel.Name = "activationlabel";
-			activationlabel.Size = new System.Drawing.Size(43, 13);
-			activationlabel.TabIndex = 10;
-			activationlabel.Text = "Trigger:";
-			// 
-			// labelFrontTextureOffset
-			// 
-			this.labelFrontTextureOffset.Location = new System.Drawing.Point(6, 70);
-			this.labelFrontTextureOffset.Name = "labelFrontTextureOffset";
-			this.labelFrontTextureOffset.Size = new System.Drawing.Size(80, 14);
-			this.labelFrontTextureOffset.TabIndex = 42;
-			this.labelFrontTextureOffset.Text = "Texture Offset:";
-			this.labelFrontTextureOffset.TextAlign = System.Drawing.ContentAlignment.TopRight;
-			// 
-			// labelBackTextureOffset
-			// 
-			this.labelBackTextureOffset.Location = new System.Drawing.Point(6, 70);
-			this.labelBackTextureOffset.Name = "labelBackTextureOffset";
-			this.labelBackTextureOffset.Size = new System.Drawing.Size(80, 14);
-			this.labelBackTextureOffset.TabIndex = 43;
-			this.labelBackTextureOffset.Text = "Texture Offset:";
-			this.labelBackTextureOffset.TextAlign = System.Drawing.ContentAlignment.TopRight;
-			// 
-			// cancel
-			// 
-			this.cancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
-			this.cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
-			this.cancel.Location = new System.Drawing.Point(453, 708);
-			this.cancel.Name = "cancel";
-			this.cancel.Size = new System.Drawing.Size(112, 25);
-			this.cancel.TabIndex = 2;
-			this.cancel.Text = "Cancel";
-			this.cancel.UseVisualStyleBackColor = true;
-			this.cancel.Click += new System.EventHandler(this.cancel_Click);
-			// 
-			// apply
-			// 
-			this.apply.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
-			this.apply.Location = new System.Drawing.Point(335, 708);
-			this.apply.Name = "apply";
-			this.apply.Size = new System.Drawing.Size(112, 25);
-			this.apply.TabIndex = 1;
-			this.apply.Text = "OK";
-			this.apply.UseVisualStyleBackColor = true;
-			this.apply.Click += new System.EventHandler(this.apply_Click);
-			// 
-			// actiongroup
-			// 
-			this.actiongroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.actiongroup.Controls.Add(this.argscontrol);
-			this.actiongroup.Controls.Add(this.actionhelp);
-			this.actiongroup.Controls.Add(this.hexenpanel);
-			this.actiongroup.Controls.Add(label2);
-			this.actiongroup.Controls.Add(this.action);
-			this.actiongroup.Controls.Add(this.browseaction);
-			this.actiongroup.Location = new System.Drawing.Point(6, 438);
-			this.actiongroup.Name = "actiongroup";
-			this.actiongroup.Size = new System.Drawing.Size(541, 176);
-			this.actiongroup.TabIndex = 1;
-			this.actiongroup.TabStop = false;
-			this.actiongroup.Text = " Action ";
-			// 
-			// argscontrol
-			// 
-			this.argscontrol.Location = new System.Drawing.Point(9, 52);
-			this.argscontrol.Name = "argscontrol";
-			this.argscontrol.Size = new System.Drawing.Size(526, 76);
-			this.argscontrol.TabIndex = 12;
-			this.argscontrol.Visible = false;
-			// 
-			// actionhelp
-			// 
-			this.actionhelp.Location = new System.Drawing.Point(505, 21);
-			this.actionhelp.Name = "actionhelp";
-			this.actionhelp.Size = new System.Drawing.Size(28, 25);
-			this.actionhelp.TabIndex = 11;
-			// 
-			// hexenpanel
-			// 
-			this.hexenpanel.Controls.Add(this.activation);
-			this.hexenpanel.Controls.Add(activationlabel);
-			this.hexenpanel.Location = new System.Drawing.Point(6, 134);
-			this.hexenpanel.Name = "hexenpanel";
-			this.hexenpanel.Size = new System.Drawing.Size(529, 36);
-			this.hexenpanel.TabIndex = 3;
-			this.hexenpanel.Visible = false;
-			// 
-			// activation
-			// 
-			this.activation.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-			this.activation.FormattingEnabled = true;
-			this.activation.Location = new System.Drawing.Point(56, 7);
-			this.activation.Name = "activation";
-			this.activation.Size = new System.Drawing.Size(470, 21);
-			this.activation.TabIndex = 0;
-			// 
-			// action
-			// 
-			this.action.BackColor = System.Drawing.Color.Transparent;
-			this.action.Cursor = System.Windows.Forms.Cursors.Default;
-			this.action.Empty = false;
-			this.action.GeneralizedCategories = null;
-			this.action.GeneralizedOptions = null;
-			this.action.Location = new System.Drawing.Point(62, 23);
-			this.action.Name = "action";
-			this.action.Size = new System.Drawing.Size(412, 21);
-			this.action.TabIndex = 0;
-			this.action.Value = 402;
-			this.action.ValueChanges += new System.EventHandler(this.action_ValueChanges);
-			// 
-			// browseaction
-			// 
-			this.browseaction.Image = global::CodeImp.DoomBuilder.Properties.Resources.List;
-			this.browseaction.Location = new System.Drawing.Point(476, 21);
-			this.browseaction.Name = "browseaction";
-			this.browseaction.Size = new System.Drawing.Size(28, 25);
-			this.browseaction.TabIndex = 1;
-			this.browseaction.Text = " ";
-			this.tooltip.SetToolTip(this.browseaction, "Browse Action");
-			this.browseaction.UseVisualStyleBackColor = true;
-			this.browseaction.Click += new System.EventHandler(this.browseaction_Click);
-			// 
-			// flagsgroup
-			// 
-			this.flagsgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.flagsgroup.Controls.Add(this.flags);
-			this.flagsgroup.Location = new System.Drawing.Point(6, 314);
-			this.flagsgroup.Name = "flagsgroup";
-			this.flagsgroup.Size = new System.Drawing.Size(541, 118);
-			this.flagsgroup.TabIndex = 0;
-			this.flagsgroup.TabStop = false;
-			this.flagsgroup.Text = " Flags";
-			// 
-			// flags
-			// 
-			this.flags.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
-						| System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.flags.AutoScroll = true;
-			this.flags.Columns = 3;
-			this.flags.Location = new System.Drawing.Point(8, 17);
-			this.flags.Name = "flags";
-			this.flags.Size = new System.Drawing.Size(532, 96);
-			this.flags.TabIndex = 0;
-			this.flags.VerticalSpacing = 1;
-			this.flags.OnValueChanged += new System.EventHandler(this.flags_OnValueChanged);
-			// 
-			// idgroup
-			// 
-			this.idgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.idgroup.Controls.Add(this.tagSelector);
-			this.idgroup.Location = new System.Drawing.Point(6, 620);
-			this.idgroup.Name = "idgroup";
-			this.idgroup.Size = new System.Drawing.Size(541, 58);
-			this.idgroup.TabIndex = 2;
-			this.idgroup.TabStop = false;
-			this.idgroup.Text = " Identification ";
-			// 
-			// tagSelector
-			// 
-			this.tagSelector.Location = new System.Drawing.Point(19, 19);
-			this.tagSelector.Name = "tagSelector";
-			this.tagSelector.Size = new System.Drawing.Size(518, 34);
-			this.tagSelector.TabIndex = 0;
-			// 
-			// frontside
-			// 
-			this.frontside.AutoSize = true;
-			this.frontside.Location = new System.Drawing.Point(17, 4);
-			this.frontside.Name = "frontside";
-			this.frontside.Size = new System.Drawing.Size(74, 17);
-			this.frontside.TabIndex = 0;
-			this.frontside.Text = "Front Side";
-			this.frontside.UseVisualStyleBackColor = true;
-			this.frontside.CheckStateChanged += new System.EventHandler(this.frontside_CheckStateChanged);
-			// 
-			// frontgroup
-			// 
-			this.frontgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.frontgroup.Controls.Add(this.labelFrontTextureOffset);
-			this.frontgroup.Controls.Add(this.frontsector);
-			this.frontgroup.Controls.Add(label11);
-			this.frontgroup.Controls.Add(this.frontlow);
-			this.frontgroup.Controls.Add(this.frontmid);
-			this.frontgroup.Controls.Add(this.fronthigh);
-			this.frontgroup.Controls.Add(this.frontTextureOffset);
-			this.frontgroup.Controls.Add(label5);
-			this.frontgroup.Controls.Add(label4);
-			this.frontgroup.Controls.Add(label3);
-			this.frontgroup.Enabled = false;
-			this.frontgroup.Location = new System.Drawing.Point(6, 6);
-			this.frontgroup.Name = "frontgroup";
-			this.frontgroup.Size = new System.Drawing.Size(541, 148);
-			this.frontgroup.TabIndex = 1;
-			this.frontgroup.TabStop = false;
-			this.frontgroup.Text = "     ";
-			// 
-			// frontsector
-			// 
-			this.frontsector.AllowDecimal = false;
-			this.frontsector.AllowNegative = false;
-			this.frontsector.AllowRelative = false;
-			this.frontsector.ButtonStep = 1;
-			this.frontsector.ButtonStepBig = 10F;
-			this.frontsector.ButtonStepFloat = 1F;
-			this.frontsector.ButtonStepSmall = 0.1F;
-			this.frontsector.ButtonStepsUseModifierKeys = false;
-			this.frontsector.ButtonStepsWrapAround = false;
-			this.frontsector.Location = new System.Drawing.Point(90, 35);
-			this.frontsector.Name = "frontsector";
-			this.frontsector.Size = new System.Drawing.Size(130, 24);
-			this.frontsector.StepValues = null;
-			this.frontsector.TabIndex = 14;
-			// 
-			// frontlow
-			// 
-			this.frontlow.Location = new System.Drawing.Point(437, 32);
-			this.frontlow.MultipleTextures = false;
-			this.frontlow.Name = "frontlow";
-			this.frontlow.Required = false;
-			this.frontlow.Size = new System.Drawing.Size(83, 107);
-			this.frontlow.TabIndex = 6;
-			this.frontlow.TextureName = "";
-			this.frontlow.UsePreviews = true;
-			this.frontlow.OnValueChanged += new System.EventHandler(this.frontlow_OnValueChanged);
-			// 
-			// frontmid
-			// 
-			this.frontmid.Location = new System.Drawing.Point(346, 32);
-			this.frontmid.MultipleTextures = false;
-			this.frontmid.Name = "frontmid";
-			this.frontmid.Required = false;
-			this.frontmid.Size = new System.Drawing.Size(83, 107);
-			this.frontmid.TabIndex = 5;
-			this.frontmid.TextureName = "";
-			this.frontmid.UsePreviews = true;
-			this.frontmid.OnValueChanged += new System.EventHandler(this.frontmid_OnValueChanged);
-			// 
-			// fronthigh
-			// 
-			this.fronthigh.Location = new System.Drawing.Point(255, 32);
-			this.fronthigh.MultipleTextures = false;
-			this.fronthigh.Name = "fronthigh";
-			this.fronthigh.Required = false;
-			this.fronthigh.Size = new System.Drawing.Size(83, 107);
-			this.fronthigh.TabIndex = 4;
-			this.fronthigh.TextureName = "";
-			this.fronthigh.UsePreviews = true;
-			this.fronthigh.OnValueChanged += new System.EventHandler(this.fronthigh_OnValueChanged);
-			// 
-			// frontTextureOffset
-			// 
-			this.frontTextureOffset.ButtonStep = 16;
-			this.frontTextureOffset.ButtonStepBig = 32F;
-			this.frontTextureOffset.ButtonStepSmall = 1F;
-			this.frontTextureOffset.ButtonStepsUseModifierKeys = true;
-			this.frontTextureOffset.DefaultValue = 0;
-			this.frontTextureOffset.Location = new System.Drawing.Point(87, 65);
-			this.frontTextureOffset.Name = "frontTextureOffset";
-			this.frontTextureOffset.Size = new System.Drawing.Size(186, 26);
-			this.frontTextureOffset.TabIndex = 41;
-			this.frontTextureOffset.OnValuesChanged += new System.EventHandler(this.frontTextureOffset_OnValuesChanged);
-			// 
-			// backside
-			// 
-			this.backside.AutoSize = true;
-			this.backside.Location = new System.Drawing.Point(17, 158);
-			this.backside.Name = "backside";
-			this.backside.Size = new System.Drawing.Size(75, 17);
-			this.backside.TabIndex = 0;
-			this.backside.Text = "Back Side";
-			this.backside.UseVisualStyleBackColor = true;
-			this.backside.CheckStateChanged += new System.EventHandler(this.backside_CheckStateChanged);
-			// 
-			// backgroup
-			// 
-			this.backgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.backgroup.Controls.Add(this.labelBackTextureOffset);
-			this.backgroup.Controls.Add(this.backsector);
-			this.backgroup.Controls.Add(label12);
-			this.backgroup.Controls.Add(this.backlow);
-			this.backgroup.Controls.Add(this.backmid);
-			this.backgroup.Controls.Add(this.backhigh);
-			this.backgroup.Controls.Add(this.backTextureOffset);
-			this.backgroup.Controls.Add(label8);
-			this.backgroup.Controls.Add(label9);
-			this.backgroup.Controls.Add(label10);
-			this.backgroup.Enabled = false;
-			this.backgroup.Location = new System.Drawing.Point(6, 160);
-			this.backgroup.Name = "backgroup";
-			this.backgroup.Size = new System.Drawing.Size(541, 148);
-			this.backgroup.TabIndex = 1;
-			this.backgroup.TabStop = false;
-			this.backgroup.Text = "     ";
-			// 
-			// backsector
-			// 
-			this.backsector.AllowDecimal = false;
-			this.backsector.AllowNegative = false;
-			this.backsector.AllowRelative = false;
-			this.backsector.ButtonStep = 1;
-			this.backsector.ButtonStepBig = 10F;
-			this.backsector.ButtonStepFloat = 1F;
-			this.backsector.ButtonStepSmall = 0.1F;
-			this.backsector.ButtonStepsUseModifierKeys = false;
-			this.backsector.ButtonStepsWrapAround = false;
-			this.backsector.Location = new System.Drawing.Point(90, 35);
-			this.backsector.Name = "backsector";
-			this.backsector.Size = new System.Drawing.Size(130, 24);
-			this.backsector.StepValues = null;
-			this.backsector.TabIndex = 17;
-			// 
-			// backlow
-			// 
-			this.backlow.Location = new System.Drawing.Point(437, 32);
-			this.backlow.MultipleTextures = false;
-			this.backlow.Name = "backlow";
-			this.backlow.Required = false;
-			this.backlow.Size = new System.Drawing.Size(83, 107);
-			this.backlow.TabIndex = 6;
-			this.backlow.TextureName = "";
-			this.backlow.UsePreviews = true;
-			this.backlow.OnValueChanged += new System.EventHandler(this.backlow_OnValueChanged);
-			// 
-			// backmid
-			// 
-			this.backmid.Location = new System.Drawing.Point(346, 32);
-			this.backmid.MultipleTextures = false;
-			this.backmid.Name = "backmid";
-			this.backmid.Required = false;
-			this.backmid.Size = new System.Drawing.Size(83, 107);
-			this.backmid.TabIndex = 5;
-			this.backmid.TextureName = "";
-			this.backmid.UsePreviews = true;
-			this.backmid.OnValueChanged += new System.EventHandler(this.backmid_OnValueChanged);
-			// 
-			// backhigh
-			// 
-			this.backhigh.Location = new System.Drawing.Point(255, 32);
-			this.backhigh.MultipleTextures = false;
-			this.backhigh.Name = "backhigh";
-			this.backhigh.Required = false;
-			this.backhigh.Size = new System.Drawing.Size(83, 107);
-			this.backhigh.TabIndex = 4;
-			this.backhigh.TextureName = "";
-			this.backhigh.UsePreviews = true;
-			this.backhigh.OnValueChanged += new System.EventHandler(this.backhigh_OnValueChanged);
-			// 
-			// backTextureOffset
-			// 
-			this.backTextureOffset.ButtonStep = 16;
-			this.backTextureOffset.ButtonStepBig = 32F;
-			this.backTextureOffset.ButtonStepSmall = 1F;
-			this.backTextureOffset.ButtonStepsUseModifierKeys = true;
-			this.backTextureOffset.DefaultValue = 0;
-			this.backTextureOffset.Location = new System.Drawing.Point(87, 65);
-			this.backTextureOffset.Name = "backTextureOffset";
-			this.backTextureOffset.Size = new System.Drawing.Size(186, 26);
-			this.backTextureOffset.TabIndex = 42;
-			this.backTextureOffset.OnValuesChanged += new System.EventHandler(this.backTextureOffset_OnValuesChanged);
-			// 
-			// panel
-			// 
-			this.panel.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
-						| System.Windows.Forms.AnchorStyles.Right)));
-			this.panel.BackColor = System.Drawing.SystemColors.Window;
-			this.panel.Controls.Add(this.backside);
-			this.panel.Controls.Add(this.frontside);
-			this.panel.Controls.Add(this.frontgroup);
-			this.panel.Controls.Add(this.backgroup);
-			this.panel.Controls.Add(this.flagsgroup);
-			this.panel.Controls.Add(this.actiongroup);
-			this.panel.Controls.Add(this.idgroup);
-			this.panel.Location = new System.Drawing.Point(12, 12);
-			this.panel.Name = "panel";
-			this.panel.Size = new System.Drawing.Size(553, 686);
-			this.panel.TabIndex = 5;
-			// 
-			// LinedefEditForm
-			// 
-			this.AcceptButton = this.apply;
-			this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
-			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
-			this.CancelButton = this.cancel;
-			this.ClientSize = new System.Drawing.Size(577, 740);
-			this.Controls.Add(this.cancel);
-			this.Controls.Add(this.apply);
-			this.Controls.Add(this.panel);
-			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
-			this.MaximizeBox = false;
-			this.MinimizeBox = false;
-			this.Name = "LinedefEditForm";
-			this.Opacity = 1;
-			this.ShowIcon = false;
-			this.ShowInTaskbar = false;
-			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
-			this.Text = "Edit Linedef";
-			this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.LinedefEditForm_FormClosing);
-			this.HelpRequested += new System.Windows.Forms.HelpEventHandler(this.LinedefEditForm_HelpRequested);
-			this.actiongroup.ResumeLayout(false);
-			this.actiongroup.PerformLayout();
-			this.hexenpanel.ResumeLayout(false);
-			this.hexenpanel.PerformLayout();
-			this.flagsgroup.ResumeLayout(false);
-			this.idgroup.ResumeLayout(false);
-			this.frontgroup.ResumeLayout(false);
-			this.backgroup.ResumeLayout(false);
-			this.panel.ResumeLayout(false);
-			this.panel.PerformLayout();
-			this.ResumeLayout(false);
+            this.components = new System.ComponentModel.Container();
+            System.Windows.Forms.Label label2;
+            System.Windows.Forms.Label label3;
+            System.Windows.Forms.Label label4;
+            System.Windows.Forms.Label label5;
+            System.Windows.Forms.Label label8;
+            System.Windows.Forms.Label label9;
+            System.Windows.Forms.Label label10;
+            System.Windows.Forms.Label label11;
+            System.Windows.Forms.Label label12;
+            System.Windows.Forms.Label activationlabel;
+            this.labelFrontTextureOffset = new System.Windows.Forms.Label();
+            this.labelBackTextureOffset = new System.Windows.Forms.Label();
+            this.cancel = new System.Windows.Forms.Button();
+            this.apply = new System.Windows.Forms.Button();
+            this.actiongroup = new System.Windows.Forms.GroupBox();
+            this.argscontrol = new CodeImp.DoomBuilder.Controls.ArgumentsControl();
+            this.actionhelp = new CodeImp.DoomBuilder.Controls.ActionSpecialHelpButton();
+            this.hexenpanel = new System.Windows.Forms.Panel();
+            this.activation = new System.Windows.Forms.ComboBox();
+            this.action = new CodeImp.DoomBuilder.Controls.ActionSelectorControl();
+            this.browseaction = new System.Windows.Forms.Button();
+            this.flagsgroup = new System.Windows.Forms.GroupBox();
+            this.flags = new CodeImp.DoomBuilder.Controls.CheckboxArrayControl();
+            this.idgroup = new System.Windows.Forms.GroupBox();
+            this.tagSelector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagSelector();
+            this.frontside = new System.Windows.Forms.CheckBox();
+            this.frontgroup = new System.Windows.Forms.GroupBox();
+            this.frontsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
+            this.frontlow = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.frontmid = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.fronthigh = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.frontTextureOffset = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedIntControl();
+            this.backside = new System.Windows.Forms.CheckBox();
+            this.backgroup = new System.Windows.Forms.GroupBox();
+            this.backsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
+            this.backlow = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.backmid = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.backhigh = new CodeImp.DoomBuilder.Controls.TextureSelectorControl();
+            this.backTextureOffset = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedIntControl();
+            this.panel = new System.Windows.Forms.Panel();
+            this.tooltip = new System.Windows.Forms.ToolTip(this.components);
+            label2 = new System.Windows.Forms.Label();
+            label3 = new System.Windows.Forms.Label();
+            label4 = new System.Windows.Forms.Label();
+            label5 = new System.Windows.Forms.Label();
+            label8 = new System.Windows.Forms.Label();
+            label9 = new System.Windows.Forms.Label();
+            label10 = new System.Windows.Forms.Label();
+            label11 = new System.Windows.Forms.Label();
+            label12 = new System.Windows.Forms.Label();
+            activationlabel = new System.Windows.Forms.Label();
+            this.actiongroup.SuspendLayout();
+            this.hexenpanel.SuspendLayout();
+            this.flagsgroup.SuspendLayout();
+            this.idgroup.SuspendLayout();
+            this.frontgroup.SuspendLayout();
+            this.backgroup.SuspendLayout();
+            this.panel.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // label2
+            // 
+            label2.AutoSize = true;
+            label2.Location = new System.Drawing.Point(15, 26);
+            label2.Name = "label2";
+            label2.Size = new System.Drawing.Size(40, 13);
+            label2.TabIndex = 9;
+            label2.Text = "Action:";
+            // 
+            // label3
+            // 
+            label3.Location = new System.Drawing.Point(255, 13);
+            label3.Name = "label3";
+            label3.Size = new System.Drawing.Size(83, 16);
+            label3.TabIndex = 3;
+            label3.Text = "Upper";
+            label3.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label4
+            // 
+            label4.Location = new System.Drawing.Point(346, 13);
+            label4.Name = "label4";
+            label4.Size = new System.Drawing.Size(83, 16);
+            label4.TabIndex = 4;
+            label4.Text = "Middle";
+            label4.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label5
+            // 
+            label5.Location = new System.Drawing.Point(437, 13);
+            label5.Name = "label5";
+            label5.Size = new System.Drawing.Size(83, 16);
+            label5.TabIndex = 5;
+            label5.Text = "Lower";
+            label5.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label8
+            // 
+            label8.Location = new System.Drawing.Point(437, 13);
+            label8.Name = "label8";
+            label8.Size = new System.Drawing.Size(83, 16);
+            label8.TabIndex = 5;
+            label8.Text = "Lower";
+            label8.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label9
+            // 
+            label9.Location = new System.Drawing.Point(346, 13);
+            label9.Name = "label9";
+            label9.Size = new System.Drawing.Size(83, 16);
+            label9.TabIndex = 4;
+            label9.Text = "Middle";
+            label9.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label10
+            // 
+            label10.Location = new System.Drawing.Point(255, 13);
+            label10.Name = "label10";
+            label10.Size = new System.Drawing.Size(83, 16);
+            label10.TabIndex = 3;
+            label10.Text = "Upper";
+            label10.TextAlign = System.Drawing.ContentAlignment.TopCenter;
+            // 
+            // label11
+            // 
+            label11.Location = new System.Drawing.Point(6, 40);
+            label11.Name = "label11";
+            label11.Size = new System.Drawing.Size(80, 14);
+            label11.TabIndex = 13;
+            label11.Text = "Sector Index:";
+            label11.TextAlign = System.Drawing.ContentAlignment.TopRight;
+            // 
+            // label12
+            // 
+            label12.Location = new System.Drawing.Point(6, 40);
+            label12.Name = "label12";
+            label12.Size = new System.Drawing.Size(80, 14);
+            label12.TabIndex = 16;
+            label12.Text = "Sector Index:";
+            label12.TextAlign = System.Drawing.ContentAlignment.TopRight;
+            // 
+            // activationlabel
+            // 
+            activationlabel.AutoSize = true;
+            activationlabel.Location = new System.Drawing.Point(6, 11);
+            activationlabel.Name = "activationlabel";
+            activationlabel.Size = new System.Drawing.Size(43, 13);
+            activationlabel.TabIndex = 10;
+            activationlabel.Text = "Trigger:";
+            // 
+            // labelFrontTextureOffset
+            // 
+            this.labelFrontTextureOffset.Location = new System.Drawing.Point(6, 70);
+            this.labelFrontTextureOffset.Name = "labelFrontTextureOffset";
+            this.labelFrontTextureOffset.Size = new System.Drawing.Size(80, 14);
+            this.labelFrontTextureOffset.TabIndex = 42;
+            this.labelFrontTextureOffset.Text = "Texture Offset:";
+            this.labelFrontTextureOffset.TextAlign = System.Drawing.ContentAlignment.TopRight;
+            // 
+            // labelBackTextureOffset
+            // 
+            this.labelBackTextureOffset.Location = new System.Drawing.Point(6, 70);
+            this.labelBackTextureOffset.Name = "labelBackTextureOffset";
+            this.labelBackTextureOffset.Size = new System.Drawing.Size(80, 14);
+            this.labelBackTextureOffset.TabIndex = 43;
+            this.labelBackTextureOffset.Text = "Texture Offset:";
+            this.labelBackTextureOffset.TextAlign = System.Drawing.ContentAlignment.TopRight;
+            // 
+            // cancel
+            // 
+            this.cancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+            this.cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.cancel.Location = new System.Drawing.Point(453, 708);
+            this.cancel.Name = "cancel";
+            this.cancel.Size = new System.Drawing.Size(112, 25);
+            this.cancel.TabIndex = 2;
+            this.cancel.Text = "Cancel";
+            this.cancel.UseVisualStyleBackColor = true;
+            this.cancel.Click += new System.EventHandler(this.cancel_Click);
+            // 
+            // apply
+            // 
+            this.apply.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+            this.apply.Location = new System.Drawing.Point(335, 708);
+            this.apply.Name = "apply";
+            this.apply.Size = new System.Drawing.Size(112, 25);
+            this.apply.TabIndex = 1;
+            this.apply.Text = "OK";
+            this.apply.UseVisualStyleBackColor = true;
+            this.apply.Click += new System.EventHandler(this.apply_Click);
+            // 
+            // actiongroup
+            // 
+            this.actiongroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.actiongroup.Controls.Add(this.argscontrol);
+            this.actiongroup.Controls.Add(this.actionhelp);
+            this.actiongroup.Controls.Add(this.hexenpanel);
+            this.actiongroup.Controls.Add(label2);
+            this.actiongroup.Controls.Add(this.action);
+            this.actiongroup.Controls.Add(this.browseaction);
+            this.actiongroup.Location = new System.Drawing.Point(6, 438);
+            this.actiongroup.Name = "actiongroup";
+            this.actiongroup.Size = new System.Drawing.Size(541, 176);
+            this.actiongroup.TabIndex = 1;
+            this.actiongroup.TabStop = false;
+            this.actiongroup.Text = " Action ";
+            // 
+            // argscontrol
+            // 
+            this.argscontrol.Location = new System.Drawing.Point(9, 52);
+            this.argscontrol.Name = "argscontrol";
+            this.argscontrol.Size = new System.Drawing.Size(526, 76);
+            this.argscontrol.TabIndex = 12;
+            this.argscontrol.Visible = false;
+            // 
+            // actionhelp
+            // 
+            this.actionhelp.Location = new System.Drawing.Point(505, 21);
+            this.actionhelp.Name = "actionhelp";
+            this.actionhelp.Size = new System.Drawing.Size(28, 25);
+            this.actionhelp.TabIndex = 11;
+            // 
+            // hexenpanel
+            // 
+            this.hexenpanel.Controls.Add(this.activation);
+            this.hexenpanel.Controls.Add(activationlabel);
+            this.hexenpanel.Location = new System.Drawing.Point(6, 134);
+            this.hexenpanel.Name = "hexenpanel";
+            this.hexenpanel.Size = new System.Drawing.Size(529, 36);
+            this.hexenpanel.TabIndex = 3;
+            this.hexenpanel.Visible = false;
+            // 
+            // activation
+            // 
+            this.activation.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.activation.FormattingEnabled = true;
+            this.activation.Location = new System.Drawing.Point(56, 7);
+            this.activation.Name = "activation";
+            this.activation.Size = new System.Drawing.Size(470, 21);
+            this.activation.TabIndex = 0;
+            // 
+            // action
+            // 
+            this.action.BackColor = System.Drawing.Color.Transparent;
+            this.action.Cursor = System.Windows.Forms.Cursors.Default;
+            this.action.Empty = false;
+            this.action.GeneralizedCategories = null;
+            this.action.GeneralizedOptions = null;
+            this.action.Location = new System.Drawing.Point(62, 23);
+            this.action.Name = "action";
+            this.action.Size = new System.Drawing.Size(412, 21);
+            this.action.TabIndex = 0;
+            this.action.Value = 402;
+            this.action.ValueChanges += new System.EventHandler(this.action_ValueChanges);
+            // 
+            // browseaction
+            // 
+            this.browseaction.Image = global::CodeImp.DoomBuilder.Properties.Resources.List;
+            this.browseaction.Location = new System.Drawing.Point(476, 21);
+            this.browseaction.Name = "browseaction";
+            this.browseaction.Size = new System.Drawing.Size(28, 25);
+            this.browseaction.TabIndex = 1;
+            this.browseaction.Text = " ";
+            this.tooltip.SetToolTip(this.browseaction, "Browse Action");
+            this.browseaction.UseVisualStyleBackColor = true;
+            this.browseaction.Click += new System.EventHandler(this.browseaction_Click);
+            // 
+            // flagsgroup
+            // 
+            this.flagsgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.flagsgroup.Controls.Add(this.flags);
+            this.flagsgroup.Location = new System.Drawing.Point(6, 314);
+            this.flagsgroup.Name = "flagsgroup";
+            this.flagsgroup.Size = new System.Drawing.Size(541, 118);
+            this.flagsgroup.TabIndex = 0;
+            this.flagsgroup.TabStop = false;
+            this.flagsgroup.Text = " Flags";
+            // 
+            // flags
+            // 
+            this.flags.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.flags.AutoScroll = true;
+            this.flags.Columns = 3;
+            this.flags.Location = new System.Drawing.Point(8, 17);
+            this.flags.Name = "flags";
+            this.flags.Size = new System.Drawing.Size(532, 96);
+            this.flags.TabIndex = 0;
+            this.flags.VerticalSpacing = 1;
+            this.flags.OnValueChanged += new System.EventHandler(this.flags_OnValueChanged);
+            // 
+            // idgroup
+            // 
+            this.idgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.idgroup.Controls.Add(this.tagSelector);
+            this.idgroup.Location = new System.Drawing.Point(6, 620);
+            this.idgroup.Name = "idgroup";
+            this.idgroup.Size = new System.Drawing.Size(541, 58);
+            this.idgroup.TabIndex = 2;
+            this.idgroup.TabStop = false;
+            this.idgroup.Text = " Identification ";
+            // 
+            // tagSelector
+            // 
+            this.tagSelector.Location = new System.Drawing.Point(19, 19);
+            this.tagSelector.Name = "tagSelector";
+            this.tagSelector.Size = new System.Drawing.Size(518, 34);
+            this.tagSelector.TabIndex = 0;
+            // 
+            // frontside
+            // 
+            this.frontside.AutoSize = true;
+            this.frontside.Location = new System.Drawing.Point(17, 4);
+            this.frontside.Name = "frontside";
+            this.frontside.Size = new System.Drawing.Size(74, 17);
+            this.frontside.TabIndex = 0;
+            this.frontside.Text = "Front Side";
+            this.frontside.UseVisualStyleBackColor = true;
+            this.frontside.CheckStateChanged += new System.EventHandler(this.frontside_CheckStateChanged);
+            // 
+            // frontgroup
+            // 
+            this.frontgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.frontgroup.Controls.Add(this.labelFrontTextureOffset);
+            this.frontgroup.Controls.Add(this.frontsector);
+            this.frontgroup.Controls.Add(label11);
+            this.frontgroup.Controls.Add(this.frontlow);
+            this.frontgroup.Controls.Add(this.frontmid);
+            this.frontgroup.Controls.Add(this.fronthigh);
+            this.frontgroup.Controls.Add(this.frontTextureOffset);
+            this.frontgroup.Controls.Add(label5);
+            this.frontgroup.Controls.Add(label4);
+            this.frontgroup.Controls.Add(label3);
+            this.frontgroup.Enabled = false;
+            this.frontgroup.Location = new System.Drawing.Point(6, 6);
+            this.frontgroup.Name = "frontgroup";
+            this.frontgroup.Size = new System.Drawing.Size(541, 148);
+            this.frontgroup.TabIndex = 1;
+            this.frontgroup.TabStop = false;
+            this.frontgroup.Text = "     ";
+            // 
+            // frontsector
+            // 
+            this.frontsector.AllowDecimal = false;
+            this.frontsector.AllowNegative = false;
+            this.frontsector.AllowRelative = false;
+            this.frontsector.ButtonStep = 1;
+            this.frontsector.ButtonStepBig = 10F;
+            this.frontsector.ButtonStepFloat = 1F;
+            this.frontsector.ButtonStepSmall = 0.1F;
+            this.frontsector.ButtonStepsUseModifierKeys = false;
+            this.frontsector.ButtonStepsWrapAround = false;
+            this.frontsector.Location = new System.Drawing.Point(90, 35);
+            this.frontsector.Name = "frontsector";
+            this.frontsector.Size = new System.Drawing.Size(130, 24);
+            this.frontsector.StepValues = null;
+            this.frontsector.TabIndex = 14;
+            // 
+            // frontlow
+            // 
+            this.frontlow.Location = new System.Drawing.Point(437, 32);
+            this.frontlow.MultipleTextures = false;
+            this.frontlow.Name = "frontlow";
+            this.frontlow.Required = false;
+            this.frontlow.Size = new System.Drawing.Size(83, 107);
+            this.frontlow.TabIndex = 6;
+            this.frontlow.TextureName = "";
+            this.frontlow.UsePreviews = true;
+            this.frontlow.OnValueChanged += new System.EventHandler(this.frontlow_OnValueChanged);
+            // 
+            // frontmid
+            // 
+            this.frontmid.Location = new System.Drawing.Point(346, 32);
+            this.frontmid.MultipleTextures = false;
+            this.frontmid.Name = "frontmid";
+            this.frontmid.Required = false;
+            this.frontmid.Size = new System.Drawing.Size(83, 107);
+            this.frontmid.TabIndex = 5;
+            this.frontmid.TextureName = "";
+            this.frontmid.UsePreviews = true;
+            this.frontmid.OnValueChanged += new System.EventHandler(this.frontmid_OnValueChanged);
+            // 
+            // fronthigh
+            // 
+            this.fronthigh.Location = new System.Drawing.Point(255, 32);
+            this.fronthigh.MultipleTextures = false;
+            this.fronthigh.Name = "fronthigh";
+            this.fronthigh.Required = false;
+            this.fronthigh.Size = new System.Drawing.Size(83, 107);
+            this.fronthigh.TabIndex = 4;
+            this.fronthigh.TextureName = "";
+            this.fronthigh.UsePreviews = true;
+            this.fronthigh.OnValueChanged += new System.EventHandler(this.fronthigh_OnValueChanged);
+            // 
+            // frontTextureOffset
+            // 
+            this.frontTextureOffset.ButtonStep = 8;
+            this.frontTextureOffset.ButtonStepBig = 16F;
+            this.frontTextureOffset.ButtonStepSmall = 1F;
+            this.frontTextureOffset.ButtonStepsUseModifierKeys = true;
+            this.frontTextureOffset.DefaultValue = 0;
+            this.frontTextureOffset.Location = new System.Drawing.Point(87, 65);
+            this.frontTextureOffset.Name = "frontTextureOffset";
+            this.frontTextureOffset.Size = new System.Drawing.Size(186, 26);
+            this.frontTextureOffset.TabIndex = 41;
+            this.frontTextureOffset.OnValuesChanged += new System.EventHandler(this.frontTextureOffset_OnValuesChanged);
+            // 
+            // backside
+            // 
+            this.backside.AutoSize = true;
+            this.backside.Location = new System.Drawing.Point(17, 158);
+            this.backside.Name = "backside";
+            this.backside.Size = new System.Drawing.Size(75, 17);
+            this.backside.TabIndex = 0;
+            this.backside.Text = "Back Side";
+            this.backside.UseVisualStyleBackColor = true;
+            this.backside.CheckStateChanged += new System.EventHandler(this.backside_CheckStateChanged);
+            // 
+            // backgroup
+            // 
+            this.backgroup.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.backgroup.Controls.Add(this.labelBackTextureOffset);
+            this.backgroup.Controls.Add(this.backsector);
+            this.backgroup.Controls.Add(label12);
+            this.backgroup.Controls.Add(this.backlow);
+            this.backgroup.Controls.Add(this.backmid);
+            this.backgroup.Controls.Add(this.backhigh);
+            this.backgroup.Controls.Add(this.backTextureOffset);
+            this.backgroup.Controls.Add(label8);
+            this.backgroup.Controls.Add(label9);
+            this.backgroup.Controls.Add(label10);
+            this.backgroup.Enabled = false;
+            this.backgroup.Location = new System.Drawing.Point(6, 160);
+            this.backgroup.Name = "backgroup";
+            this.backgroup.Size = new System.Drawing.Size(541, 148);
+            this.backgroup.TabIndex = 1;
+            this.backgroup.TabStop = false;
+            this.backgroup.Text = "     ";
+            // 
+            // backsector
+            // 
+            this.backsector.AllowDecimal = false;
+            this.backsector.AllowNegative = false;
+            this.backsector.AllowRelative = false;
+            this.backsector.ButtonStep = 1;
+            this.backsector.ButtonStepBig = 10F;
+            this.backsector.ButtonStepFloat = 1F;
+            this.backsector.ButtonStepSmall = 0.1F;
+            this.backsector.ButtonStepsUseModifierKeys = false;
+            this.backsector.ButtonStepsWrapAround = false;
+            this.backsector.Location = new System.Drawing.Point(90, 35);
+            this.backsector.Name = "backsector";
+            this.backsector.Size = new System.Drawing.Size(130, 24);
+            this.backsector.StepValues = null;
+            this.backsector.TabIndex = 17;
+            // 
+            // backlow
+            // 
+            this.backlow.Location = new System.Drawing.Point(437, 32);
+            this.backlow.MultipleTextures = false;
+            this.backlow.Name = "backlow";
+            this.backlow.Required = false;
+            this.backlow.Size = new System.Drawing.Size(83, 107);
+            this.backlow.TabIndex = 6;
+            this.backlow.TextureName = "";
+            this.backlow.UsePreviews = true;
+            this.backlow.OnValueChanged += new System.EventHandler(this.backlow_OnValueChanged);
+            // 
+            // backmid
+            // 
+            this.backmid.Location = new System.Drawing.Point(346, 32);
+            this.backmid.MultipleTextures = false;
+            this.backmid.Name = "backmid";
+            this.backmid.Required = false;
+            this.backmid.Size = new System.Drawing.Size(83, 107);
+            this.backmid.TabIndex = 5;
+            this.backmid.TextureName = "";
+            this.backmid.UsePreviews = true;
+            this.backmid.OnValueChanged += new System.EventHandler(this.backmid_OnValueChanged);
+            // 
+            // backhigh
+            // 
+            this.backhigh.Location = new System.Drawing.Point(255, 32);
+            this.backhigh.MultipleTextures = false;
+            this.backhigh.Name = "backhigh";
+            this.backhigh.Required = false;
+            this.backhigh.Size = new System.Drawing.Size(83, 107);
+            this.backhigh.TabIndex = 4;
+            this.backhigh.TextureName = "";
+            this.backhigh.UsePreviews = true;
+            this.backhigh.OnValueChanged += new System.EventHandler(this.backhigh_OnValueChanged);
+            // 
+            // backTextureOffset
+            // 
+            this.backTextureOffset.ButtonStep = 8;
+            this.backTextureOffset.ButtonStepBig = 16F;
+            this.backTextureOffset.ButtonStepSmall = 1F;
+            this.backTextureOffset.ButtonStepsUseModifierKeys = true;
+            this.backTextureOffset.DefaultValue = 0;
+            this.backTextureOffset.Location = new System.Drawing.Point(87, 65);
+            this.backTextureOffset.Name = "backTextureOffset";
+            this.backTextureOffset.Size = new System.Drawing.Size(186, 26);
+            this.backTextureOffset.TabIndex = 42;
+            this.backTextureOffset.OnValuesChanged += new System.EventHandler(this.backTextureOffset_OnValuesChanged);
+            // 
+            // panel
+            // 
+            this.panel.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.panel.BackColor = System.Drawing.SystemColors.Window;
+            this.panel.Controls.Add(this.backside);
+            this.panel.Controls.Add(this.frontside);
+            this.panel.Controls.Add(this.frontgroup);
+            this.panel.Controls.Add(this.backgroup);
+            this.panel.Controls.Add(this.flagsgroup);
+            this.panel.Controls.Add(this.actiongroup);
+            this.panel.Controls.Add(this.idgroup);
+            this.panel.Location = new System.Drawing.Point(12, 12);
+            this.panel.Name = "panel";
+            this.panel.Size = new System.Drawing.Size(553, 686);
+            this.panel.TabIndex = 5;
+            // 
+            // LinedefEditForm
+            // 
+            this.AcceptButton = this.apply;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
+            this.CancelButton = this.cancel;
+            this.ClientSize = new System.Drawing.Size(577, 740);
+            this.Controls.Add(this.cancel);
+            this.Controls.Add(this.apply);
+            this.Controls.Add(this.panel);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "LinedefEditForm";
+            this.Opacity = 1D;
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Edit Linedef";
+            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.LinedefEditForm_FormClosing);
+            this.HelpRequested += new System.Windows.Forms.HelpEventHandler(this.LinedefEditForm_HelpRequested);
+            this.actiongroup.ResumeLayout(false);
+            this.actiongroup.PerformLayout();
+            this.hexenpanel.ResumeLayout(false);
+            this.hexenpanel.PerformLayout();
+            this.flagsgroup.ResumeLayout(false);
+            this.idgroup.ResumeLayout(false);
+            this.frontgroup.ResumeLayout(false);
+            this.backgroup.ResumeLayout(false);
+            this.panel.ResumeLayout(false);
+            this.panel.PerformLayout();
+            this.ResumeLayout(false);
 
 		}
 
diff --git a/Source/Core/Windows/ThingEditForm.cs b/Source/Core/Windows/ThingEditForm.cs
index d4cbb56..7e4dd3c 100644
--- a/Source/Core/Windows/ThingEditForm.cs
+++ b/Source/Core/Windows/ThingEditForm.cs
@@ -198,9 +198,9 @@ namespace CodeImp.DoomBuilder.Windows
 			posX.Text = ((int)ft.Position.x).ToString();
 			posY.Text = ((int)ft.Position.y).ToString();
 			posZ.Text = (useabsoluteheight ? ((int)Math.Round(ft.Position.z + floorheight)).ToString() : ((int)ft.Position.z).ToString());
-			posX.ButtonStep = General.Map.Grid.GridSize;
+			/*posX.ButtonStep = General.Map.Grid.GridSize;
 			posY.ButtonStep = General.Map.Grid.GridSize;
-			posZ.ButtonStep = General.Map.Grid.GridSize;
+			posZ.ButtonStep = General.Map.Grid.GridSize;*/
 
 			// Action/tags
 			action.Value = ft.Action;