Explain these Merge Review windows

I'm a long long time user of IntelliJ and throughout all of these years I always find myself struggling to understand what the heck I'm looking at with regards to the 3 panel Merge Revision when dealing with a conflict.

Here is the situation for the branch.

I have a Branch B which I started 2 months ago but got sidelined.

What I did was

• update develop with a git pull
• switched to Branch B
• trying to update branch B with rebase develop

This gives me the state of being in conflict which is fine I can work it out but I need to know what panel is what.

This is what I never seem to get because it always seems to be on different sides when comparing files in a project and in other projects.

With regard to the Left side 'Your version'

• Is this the Branch B
• Is this the Branch develop

With regard to the Right side 'Changes from the server'

• Is this the Branch B
• Is this the Branch develop

At times it seems that the server is actually my files and not that of the develop branch.

Other times it seems to be the other way around.

Is Your Version always to be the Branch you are currently on?

If I am on Branch B and I rebase from Develop then Develop would be my 'Your Version' as it takes place on the branch then my code gets put on top of it which then makes 'Changes from the server' my Branch B.

I'm just confused over this and need some guidance.