Preprocessors are, as their name suggests, a list of markers a script can have applied to it that tag the script with information when it is compiled. They run various actions on scripts. A preprocessor is called by placing #preprocessorname [arguments] somewhere in your script, it depends on the preprocessor itself. Be careful not to accidentally enable one through the use of a comment!

The list of Preprocessors is:

• Debug Preprocessor
• Loader Preprocessor
• LoadFirst Preprocessor
• LoadLast Preprocessor
• Modloaded Preprocessor
• Modloader Preprocessor
• NoLoad Preprocessor
• Priority Preprocessor
• Replace Preprocessor
• Snip Preprocessor