Right-click on either the vertical or horizontal ruler to display this menu which includes most of the settings from the Edit > Preferences > Measurement dialog box along with some Guide and Snap editing commands.
 Measurement Units
Quickly set or change the measurement units used in the rulers.
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 Show Rulers
Toggle to either show or hide the rulers that appear at the top and left side of the main work area.
Shortcut Key -- CTRL+R
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 Show Grid
Toggle to either show or hide the gridlines in the main work area.
Shortcut Key -- CTRL+'
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 Show Guides
Toggle to show or hide Guidelines within the main work area.
Shortcut Key -- CTRL+;
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 Add New Page Guides
Opens a dialog box to add multiple guides along an array or add multiple guides to multiple pages at once.
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 Delete Guides on Current Page
Deletes all guidelines on the current page.
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 Delete All Page Guides
Deletes all guidelines from all pages.
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 Snap
Click this command to toggle the ability to snap to objects ON and OFF. Hover over Snap to access the toggles for the different snap objects.
Shortcut Key -- CTRL+SHIFT+;
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 Setup Measurement
Launches the Preference dialog box with the Measurement panel active.
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