Public bug reported:

Use case: User wants to understand what "apt-get purge" actually does to
the system.

Running "apt-get --help" tell him that this command will "remove and purge 
packages".
This is not a very straight forward description. At least, I'm left with many 
questions.

Running "man apt-get" gives you a similar recursive definition of purge; it 
says that:
"purge is identical to remove except that packages are removed and purged"

What I wanted to know was:

1) What is the difference between "remove" and "purge"?
2) Does "purge" delete program files from the disk?
3) Does "purge" delete configuration files from the disk?
4) Does "purge" also delete all packages that depend on the one that I'm 
purging?


Note: I already know the answer to all of these questions. This bug is about 
improving the built-in documentation.
Having a recursive definition of purge in both --help and "man" makes it hard 
to learn about this command.

** Affects: apt (Ubuntu)
     Importance: Wishlist
         Status: Confirmed

-- 
Documentation for apt-get "purge" is sort of hard to understand
https://bugs.launchpad.net/bugs/243948
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