===Subversion Revisions===

Many subversion commands allow you to specify a revision or revisions

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-r [--revision] arg      (some commands also take ARG1:ARG2 range)
%%

revision argument(s) can be:
	- N revision number
	- '{' DATE '}' revision at start of the date
	- 'BASE'       base rev of item's working copy
	- 'HEAD'       latest in repository

To find differences between your (modified) working copy and latest (updated) in repository try 
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$ svn diff -rHEAD myfile.php
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or to find differences between the base rev of your working copy and latest (updated) in repository try 
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$ svn diff -rBASE:HEAD myfile.php
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or between a date in the past and the latest in the repository
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$ svn diff -r{20080801}:HEAD myfile.php
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or between two dates
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$ svn diff -r{20080801}:{20080808} myfile.php
%%

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