Locking use question

Hi folks,

I am writing up a description of the locking GUI in TSVN, and having
read through the SVN locking docs, it is unclear whether there are any
real use cases for locking _without_ having set the svn:needs-lock
property. If I lock a file it stops others checking in before me, but
doesn't stop them modifying their local copies. Once I unlock, they can
merge my changes in with any they have made in the meantime, which still
follows the copy-modify-merge model. Is there a use for this which I may
have missed, or is locking really only useful in conjunction with the
svn:needs-lock property?

Simon

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