Changed startup screens per David's suggestions:

'*' now means random-selection-in-current-screen; '!' means random character; '?' means help. Speak up if these are too inconvenient.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@856 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on January 16, 2007
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