These are mainly pages I've taken snippets from or wrote code based on them; or pages containing reference/technical data.
In brackets is a code I use in the script to refer to the page. These aren't selected to be representative, but rather results of search engine searches.
[R0]
getopt-parse.bash example, on Debian systems: /usr/share/doc/util-linux/examples/getopt-parse.bash.gz
-list type
to -list font
was in 6.3.5-7