PICKFIRST (System Variable)
PICKFIRST is a system variable that’s used to control whether we can select objects before we start a command.
FAQs about object selection in CAD
The system variable that controls the cumulative selection is PICKADD, the initial value for PICKADD is 2, which means the PICKADD is on; when the value is 0 or 1, the PICKADD is off, which means the previously selected objects are removed from the selection set.
Why I’m unable to edit by double-clicking the text?
By default, CAD supports operations to select objects before executing the command, so many users are accustomed to operating after selecting the graphics that they are going to edit. But this can be changed. You can execute commands first and then select the graphics to be edited.
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