Each MyCode can have a title and will display your notice in a colored box.
Examples
Code:
[warn]This is a simple warn box[/warn] [warn=a title]This is a simple warn box with a title[/warn] [info]This is a simple info box[/info] [info=a title]This is a simple info box with a title[/info] [error]This is a simple error box[/error] [error=a title]This is a simple error box[/error] [success]This is a simple success box[/success] [success=a title]This is a simple success box[/success]