Custom MyCode
SweptForums has a few custom markdown entries.

Input Output
[icode]This code stays inline instead of being blocked out.[/icode] This code stays inline instead of being blocked out.
[code title=Title]This code is blocked out but with a title.[/code]
Title
This code is blocked out but with a title.
[spoiler]This is some secret text.[/spoiler] This is some secret text.