"*Alist that says how to fontify certain phrases.
Each item looks like this:
- (\"_\\\\(\\\\w+\\\\)_\" 0 1 'underline)
+ (\"_\\\\(\\\\w+\\\\)_\" 0 1 \\='underline)
The first element is a regular expression to be matched. The second
is a number that says what regular expression grouping used to find