Smart deleting

Quite often there appears the problem of having to delete one symbol without deleting its contents. In these cases, put the cursor after the symbol (or left parenthesis) and press delete twice. In this example, we remove a square root:

Put the cursor after the symbol but before its contents, either by using the mouse or the keyboard
Press delete once; this selects everything that will be deleted if confirmed. Note how only the symbol is selected
Press delete again to confirm deletion of the symbol

When trying to delete a couple of matching parenthesis, the obtained by using the icons in the General tab, there are two places to delete, and they do different things:

• Deleting the left (opening) parenthesis will remove only both parentheses. Before the actual deletion, which will happen when the delete key is pressed twice, both parentheses will be shown highlighted.
• Deleting the right (closing) parenthesis will remove both parentheses and their contents. As before, the actual deletion will happen when the delete key is pressed for the second time, and everything that will be deleted will be highlighted.