Options (A) - (T) -- comprise a list of filetypes that will be excluded 
automatically from type-out.  The list should include filetypes that 
usually indicate a binary file, such as COM, OBJ, and EXE.  A question mark 
will match any character.  To eliminate any filetype from the list, replace 
it with one you want to exclude from type-out or repeat a previously listed 
filetype, such as "COM".  Do not leave one of the filetypes in the list 
blank, or you will be unable to type any file with a blank filetype.