How to customize project version number in subversion

["Michael Yang" <michael.yxf@gmail.com>]

Hi:

I installed subversion on my debian, everything works well.

I just wonder where I can set the initial version control number of the project.
For example, now the version starts from revision 1, and incremental by one.
I want to set the number in format of 1.0.0.1, how can I do this setting the main branch number?

Thanks.
Michael