K 10 svn:author V 3 bcr K 8 svn:date V 27 2019-02-11T17:48:52.043010Z K 7 svn:log V 536 MFC r343921: Add an example to pw.8 about how to add an existing user to a group. Instead of using pw to modify group membership, users often edit /etc/group by hand, which is discouraged. Provide an example of adding a user to the wheel group, which is a common use case. I'm using a different user here as in the previous example as that deleted the user (although the examples don't necessarily have to be followed in order). Reviewed by: rgrimes,0mp Approved by: 0mp Differential Revision: https://reviews.freebsd.org/D19123 END