If you have never used a source code management and versioning system like ClearCase or Subversion before, perhaps you feel a tangible comfort in being able to start SEU on a source member to see what's there. Perhaps you find the thought of storing all your source in some other repository a bit unnerving.
Fear not RTCi.
With RTCi, the source you're managing is being stored in that very same database on IBM i that you trust to manage your source members today... with a major difference: it's versioned. Imagine audit journalling turned up to the max, stored more efficiently.
Today, you can only see the current contents of the source member. With RTCi, you can see the whole history of changes. For each change, you can see what lines of code were changed, who changed them, when it was changed, why it was changed, and where it was compiled.
Imagine being able to rollback source changes that introduced a bug, or suspend the changes you're making on some enhancement, to work on some emergency fix for production code. Imagine having a problem reported by Quality Assurance for the changes you delivered last Friday, and being able to reconstruct the exact state of all the code that you delivered to QA at that time, so that you can debug the problem.

Pending Changes "Backup before replace". I am new to Concert for i and I can't determine if I'm being told that I must make a backup of my library before I "Accept All Incoming Baselines and Change Sets" OR if Concert will do it for me. I've searched all the help I can find and I don't see anything about it. Any suggestions?