including the mention of SET1.
\n\
-c, --complement first complement SET1\n\
-d, --delete delete characters in SET1, do not translate\n\
- -s, --squeeze-repeats replace sequence of characters with one\n\
+ -s, --squeeze-repeats replace each input sequence of a repeated character\n\
+ that is listed in SET1 with a single occurrence\n\
+ of that character\n\
-t, --truncate-set1 first truncate SET1 to length of SET2\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);