Set Show Off

The following commands set the show mode:
Format:
SPECTRA> set show off
SPECTRA> set show on default

Description:
off: The scrolling region is set to lines [1-(page_size - 1)] and the queue is not re-displayed unless a show command is entered.

on: Resets the scrolling region to lines [1-page_size] and lets the queue be re-displayed after commands that that change its contents.