If you modify an auto-generated Character List, use a semicolon (;) instead of a comma before any additions. That way, when you regenerate your lists, I will know to leave those additions untouched.
To completely FREEZE a list so that it will not be modified in the future, put the semicolon at the very beginning of the line, like (;George, Alice) and then I will know to ignore this list during future list generations.
When you print, however, these semicolons will magically either not print (if they’re at the beginning of the line) or will simply print as commas.