ignore on commit feature
Created originally on Bitbucket by Andrey Kozhyn
It is very useful feature that tortoise SVN has - ignore-on-commit.
If file marked as being ignored on commit it is placed in separate list in commit dialog. And by default all files in this list are unchecked. so by default file is not committed, but if you need it, check file and commit it.
http://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-dug-commit.html#tsvn-dug-commit-ignore