When i first used subversion , i even did know how it controls version.
I install the tortoiseSVN help me to view , update , commit my revision.
Usually , We just need the latest version , i.e. the HEAD version.
(head version means the latest version commited by someone)
but sometimes we need to rollback to the previous version, or someone give you
a revision number , you need to check it . so how to do that ?
the simplest way is :
1.open the tortoiseSVN repository browser
2. type the correct address
3.click the 'HEAD'button
4.input the revision number you want.
now what you see in the browser is the revision number you need.