Use SelectReset to deselect all selected lines (if a selection is active) or to reselect the prior selection (if a selection is not active). (See Selection.)
SelectReset may also be entered as SelectR[eset], SelR[eset], or Reset.
SelectReset may also be invoked by pressing F7.
SelectReset has no operands:
Return Codes
OK Successful.
Examples
Deselect all selected lines (selection is currently active):
=> selr
Select all lines from the prior selection (selection is not currently active):
=> selr