Clarify and expand on locking, note minor variation of scheme. File removal.
Clarify and expand on locking, note minor variation of scheme.
File removal.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion