whether to allow the file(s) to be included. This is treated in exactly the same
way as the "pre" blocks for all other rules.
A test map demonstrating this in use is included.
git-svn-id: svn://svn.code.sf.net/p/crossfire/code/maps/trunk@13049 282e977c-c81d-0410-88c4-b93c2d0d6712
cavesomething