box-all-points-inside-switch ("sib")

See this command in the command table.

To access this command:

Open the Project Settings screen and select Points and Strings >> Select string when all points in box.
Using the command line, enter "box-all-points-inside-switch"
Use the quick key combination "sib".
Display the Find Command screen, locate box-all-points-inside-switch and click Run.

Command Overview

Control whether string is selected if all points lie within selection box. If this switch is enabled, a string is selected if all points lie within the selection box. This only applies to the box selection method, not other selection methods. See Selecting 3D Data Interactively.