Project history & branches
Undo/Redo handles short-term edits. Checkpoints are durable full-model snapshots. Branches are named checkpoint lines you can switch between.
current branch
Compare & selective merge
Compare the working copy, branch heads, or checkpoints. Select differences from the left/source version and cherry-pick them transactionally into the current working branch.
left / source
right / compare against
Choose two versions and compare.