• Undo restores the equation to its state prior to the last change. Choosing Undo successively undoes previous changes.

• Redo reverses the previous undo.

• Cut deletes the highlighted region of the equation and holds it in a paste buffer. If nothing is highlighted, then the character surrounded by the marker is cut.

• Copy duplicates the highlighted region of the equation and holds it in a paste buffer. If nothing is highlighted, then the character surrounded by the marker is copied.

• Paste places copied or cut text from the paste buffer at the insertion point.