.AL [type] [indent] [1]Initialize numbered or alphabetized list.   Specify list type, and indent of text. If third argument is 1, spacing between items is suppressed. Mark each item in list with .LI; end list with .LE. Default is numbered listing.  Default text indent is specified in register Li.
1 | Arabic numbers  | 
A | Uppercase letters  | 
a | Lowercase letters  | 
I | Roman numerals, uppercase  | 
i | Roman numerals, lowercase  |