K 10
svn:author
V 8
netchild
K 8
svn:date
V 27
2010-11-22T09:37:52.979762Z
K 7
svn:log
V 268
1) Add a hint to check for duplicates with optional files. The committed
   text is a little bit modified to what was submitted.
   The code example to automate a part of this was proposed by
   Dmitry Morozovsky.
2) Remove trailing whitespace.

Submitted by:	arundel

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