An arrow curving forward to the right, reinstating a reversed action.
An arrow curving clockwise reinstates an action that undo reversed. It is the mirror of the undo arrow and is disabled whenever there is nothing to reinstate.
Reinstates an action that was reversed, stepping forward through the same history undo steps back through.
Contexts: Software
An arc sweeping from left to right with an arrowhead at its right end, curving back on itself as a mirror of the undo mark.
Both are curved arrows. Refresh loops closed on itself to repeat a fetch; redo is an open arc that steps forward through a history.
Both are built from arrows, and both are used in software contexts.