snap-to-string-data-switch ("stps")
See this command in the command table.
To access this command:
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Home ribbon >> Snapping >> Snap To>> Strings.
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Use the quick key combination "stpp".
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Using the command line, enter "snap-to-string-data-switch".
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On the Find Command screen, highlight snap-to-string-data-switch and click Run.
 
Command Overview
Enable or disable snapping to string data in a 3D view.
