This script overlays a passage map on top of the map spriteset. It allows you to display the passage-settings of your tiles for debug purposes.
Script: download here
You will need this spritesheet.
In the script editor, place this script below Materials and above Main.
Download and place the required spritesheet in your Graphics/System folder.
You can choose which sprite you want to use in the configuration.
You can also add your own by adding additional rows to the image.
You can enable/disable the passage map using a script call
$game_system.passage_map_disabled = true/false
This might help when setting up passage tiles on your parallax maps.
Here is a custom sprite that uses lines to mark passability. Credits to Galv for the sprite set.