Page: Escape Sequences
I was looking for documentation on escaped characters.
This was because Auto Hotkey threw an error when I used <%* %> as an option for the text insert script. It said the illegal character was * but really what was happening was that the unquoted text %* % was treated like a variable since % is used to enclose variables in Auto Hotkey. The solution was to escape the percent sign with one left back tick.