Okay. I will be much familiar with bazaar :). Thanks, Yilmaz Eyidogan <div class="gmail_quote">2010/2/11 Alexander Belchenko <<a href="mailto:bialix@ukr.net">bialix@ukr.net</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">YILMAZ EYIDOGAN пишет:<div class="im"> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi Alexander, Bazaar -> Start -> Branch helped me to return back to old revision temporarily. What is checkout ( Bazaar -> Start -> Checkout )? Also, this option helped me to return old revisions. </blockquote> </div> Checkout means that you have a master branch somewhere (usually on central server) where all history kept, and you have working files of this branch on your computer. Working files corresponding to the this master branch is called "checkout". Sometimes this is also called "working copy".<div class="im"> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> What is difference between Branch and Checkout commands. </blockquote> </div> Branch is a standalone copy of your project history, it's including the history and working tree. Checkout is often just working tree of another branch. So, while using checkout several people can work together on the same branch, sharing history via central server. This is very close to the way how SVN works. For personal usage I'd recommend to use branch, until you will become more familiar with bzr.<div class="im"> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Thank you for your helps, (I am a new user of Bazaar and Revision Control) </blockquote> </div> Please, read the tutorial, it's very good and easy to understand: <a href="http://doc.bazaar.canonical.com/bzr.2.1/en/tutorials/tutorial.html" target="_blank">http://doc.bazaar.canonical.com/bzr.2.1/en/tutorials/tutorial.html</a> </blockquote></div>