# Parallel Linedef Mode

NEW IN UNOFFICIAL 2.10!
Parallel linedefs are created alongside each linedef.
This mode is helpful for:
• Creating tracks quickly.
• Expand/shrink shape.
This mode shows a small dialog window that you can use to create parallel linedef(s) from a linedef or multiple linedefs. Although this mode shows a dialog window, you can still use the main interface and zoom/move your view around the map.
This mode is volatile, which means that this mode returns to the previous stable mode when the map is saved or closed, either accepting or discarding your preview changes. You can access this mode through the Vertices Mode, Linedefs Mode or Sectors Mode but is recommended to access from Linedefs Mode.
WARNING!
• Selected vertices with intersections (more than 2 selected linedefs connected) can result in undesirable result! The mode will warn about this whatsoever.
• Open-paths will ignore linedefs front/back dir. on the middle, if both end tips are facing opposite directions then the direction will be unpredictable.
• Close-paths will ignore all linedefs front/back dir. and always parallel into inside, use "Backwards" to place elements outside.

## Dialog Settings

Create as... | Select which type of elements to create, see below for more information.
Distance | Set distance between selected linedef(s) and parallel linedef(s).
Close Open-Paths Ends | Attach linedefs between original paths and open-paths at both ends. Only available for linedef elements and doesn't affect close-paths.
Backwards / Outside | When checked, it creates parallel path on the opposite side.

## "Create as..." types

Linked Linedef | Creates a normal parallel linedef.
Unlinked Linedef | Creates an isolated parallel linedef that won't intersect or merge into elements on the map. Not recommended.
Vertices | Creates a vertex at each point of the parallel.
Thing | Creates a thing at each point of the parallel.

## Default Controls

Enter | Accept and apply the changes, and return to the previous mode.
Escape | Discard the changes and return to the previous mode.