Packages with unclear usage

It happens now and then that I install a package and cannot find any information on how to use it. whereis and apropos give no info and/or there's no man page.

For example, I installed console-braille, a package of fonts and keymaps, but I have no idea what the fonts are called and nothing that looks like braille shows up when I browse my installed fonts. There are no internet search results either.

Similar problem with the package fontmanager.app: if there's an executable, it doesn't have the same name as the package, so I have no idea how to access the program. The man page gives no usage instructions.

How do I figure out how to use these programs? I don't understand how packages with no documentation even end up in a distribution.