Usually there are manual pages for commands, for libraries and drivers like libwacom it is less common, and they are not necessarily the same as the package name.
Some packages also just have a Readme file or an HTML manual installed under /usr/share/doc or similar.
When unsure, I often just check the list of files that belong to a package, most package managers can do it. E.g. on Debian-based (i.e. apt using) distros, dpkg -L $packagename will list it, in arch based distros it is pacman -Ql $packagename.
Usually there are manual pages for commands, for libraries and drivers like libwacom it is less common, and they are not necessarily the same as the package name. Some packages also just have a Readme file or an HTML manual installed under /usr/share/doc or similar.
When unsure, I often just check the list of files that belong to a package, most package managers can do it. E.g. on Debian-based (i.e. apt using) distros,
dpkg -L $packagenamewill list it, in arch based distros it ispacman -Ql $packagename.