SVN — Compare Working Copy to a Specific Revision

To get a diff of a specific file and a specific revision of that file,
svn diff -r REVISION_NUMBER PATH

To compare a specific revision to another specific revision (instead of your working copy) enter:
svn diff -r REVISION_NUMBER SECOND_REVISION_NUMBER PATH

It definitely helps to do a straight forward grep to see only additions of subtractions:
svn diff blah | grep ^+ & svn diff blah | grep ^-

SVN — Access Specific Revision From Web Browser

Say you have a fresh install of SVN working. You want a no hassle, built in way to view other revisions on your browser…

I found this solution online googling:
http://YOUR_SVN_REPO_ROOT/!svn/bc/4/

The above shows all repositories at revision 4.

So http://YOUR_SVN/!svn/bc/4/YOUR_REPO/REGULAR_DIRECTORY_STRUCTURE

Will take you wherever you’d like.

I’ll learn how to actually use SVN some time in the future. For now, this will do.