diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index acf99d5d1b..9e2ef889e7 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2765,6 +2765,54 @@ FUNC(LS_Line_SetBlocking)
 	return true;
 }
 
+FUNC(LS_Line_SetAutomapFlags)
+// Line_SetAutomapFlags (id, setflags, clearflags)
+{
+	static const int flagtrans[] =
+	{
+		ML_SECRET,
+		ML_DONTDRAW,
+		ML_MAPPED,
+		ML_REVEALED,
+		-1
+	};
+
+	if (arg0 == 0) return false;
+
+	int setflags = 0;
+	int clearflags = 0;
+
+	for (int i = 0; flagtrans[i] != ML_PORTALCONNECT; i++, arg1 >>= 1, arg2 >>= 1)
+	{
+		if (arg1 & 1) setflags |= flagtrans[i];
+		if (arg2 & 1) clearflags |= flagtrans[i];
+	}
+
+	FLineIdIterator itr(arg0);
+	int line;
+	while ((line = itr.Next()) >= 0)
+	{
+		level.lines[line].flags = (level.lines[line].flags & ~clearflags) | setflags;
+	}
+
+	return true;
+}
+
+FUNC(LS_Line_SetAutomapStyle)
+// Line_SetAutomapStyle (id, setflags, clearflags)
+{
+	if (arg1 < AMLS_COUNT && arg1 >= 0) {
+		FLineIdIterator itr(arg0);
+		int line;
+		while ((line = itr.Next()) >= 0)
+		{
+			level.lines[line].automapstyle = (AutomapLineStyle) arg1;
+		}
+
+		return true;
+	}
+	return false;
+}
 
 
 FUNC(LS_ChangeCamera)
@@ -3713,6 +3761,8 @@ static lnSpecFunc LineSpecials[] =
 	/* 278 */ LS_Sector_SetCeilingGlow,
 	/* 279 */ LS_Floor_MoveToValueAndCrush,
 	/* 280 */ LS_Ceiling_MoveToValueAndCrush,
+	/* 281 */ LS_Line_SetAutomapFlags,
+	/* 282 */ LS_Line_SetAutomapStyle,
 
 
 };