just minor cleanups

update_logic.lua

@@ -106,15 +106,9 @@ function edit(mem, record, cursor_x, cursor_y, transformed)
 	bank = record.address[1]
 	line_no = record.address[2]
 
-	-- very important to transform
+	-- very important to transform *back* into the space of the instruction coordinates
-	-- *back* into the space of the
+	dx = (1.0/state.scale) * (cursor_x*cos(-state.rotation) - cursor_y*sin(-state.rotation))
-	-- instruction coordinates
+	dy = (1.0/state.scale) * (cursor_x*sin(-state.rotation) + cursor_y*cos(-state.rotation))
-	dx = (1.0/state.scale) * (
-	   cursor_x*cos(-state.rotation) 
-	 - cursor_y*sin(-state.rotation))
-	dy = (1.0/state.scale) * (
-		  cursor_x*sin(-state.rotation) 
-		+ cursor_y*cos(-state.rotation))
 
 	-- we need to allow for this.
 	if not transformed then