Swap

This command changes the cursor to the 'Flip' icon.  Then, you click on an interior branch, MEGA swaps the two subtrees defined by this branch.  If each of the subtrees is an individual taxon, then Swap is the same as FlipRH_Flip.

The cursor will revert to the arrow if you click on the arrow icon on the left-hand side of the Tree ExplorerHC_Tree_Explorer.