What the meaning of "working-copy-less"

[wuzhouhui]

Hi,

I'm translating the svnmucc reference of svnbook-1.8, and one sentence
says:

> It is also able to perform working-copy-less file content and
> versioned property modifications, which is functionality not currently
> offered by svn.

I don't understand the meaning of "working-copy-less" in above sentence,
could you explaine it for me?

wuzhouhui