[PATCH 0/3] doc: Add a general note about $?

[Tom Rini]

Hey all,

This is a small series to first add a general explanation for how $? is
set by commands to the cmdline documentation and second remove the
redundant information. The first patch adds this while removing the
identical (and sometimes slightly wrong or incomplete) information from
commands which had it. The last two patches remove the information from
cases that were not quite as clear, to make review easier. The commands
which either do something different or provided additional information
about what counts as success or failure have been retained.

-- 
Tom