Each debugger window has a shortcut menu, which contains frequently used commands for that window.
To display the shortcut menu for a window
For example, if you click the right mouse button in the Variables window, you see a shortcut menu with several formatting options.
If you click the right mouse button in a source/text window, you see a shortcut menu with several commands, including Insert/Remove Breakpoint.
If you click a variable Var within a source window while you are debugging, the shortcut menu includes the command QuickWatch Var, which displays the variable Var in the QuickWatch dialog box.