When you perform changes inside your working copy, those changes are local to your working copy only. In order for you to share your changes with others, you need to commit them up to the central repository the working copy you are using was initially downloaded from. To commit your changes up to the central repository you use the commit command of Subversion's client installed in your workstation. Initially, when you get registered inside &TCAR;, you won't be able to publish your changes to &TCAR; immediatly. It is necessary that you prove your interest in contributing first, preferably in conjunction with a description of the changes you pretend to commit. This restriction is necessary in order to protect the source repository from spammers. Once you've received access to publish your changes, they will remain valid to you and there is no need for you to request permission to publish new changes as long as you behave as a good cooperating citizen. As a good cooperating citizen one understand of a person who respects the work already done by others and share ideas with authors before changing relevant parts of their work, specially in situations when the access required to realize the changes has been granted already. Of course, there is a time when conversation has taken place, the paths has been traced and changing the work is so obvious that there is no need for you to talk about it; that's because you already did, you already built the trust to keep going. As complement, the mailing list mentioned above is available for sharing ideas in a way that good relationship between community citizens could be constantly balanced. The relationship between community citizens is monitored by repository administrators. Repository administrators are responsible of granting that everything goes the way it needs to go in order for &TCAR; to accomplish its mission.