COMMAND NAME:	timerange

TYPE:		Data selection

SYNTAX:		"timerange yyddd-hhmmss yyddd-hhmmss"

DESCRIPTION:

Sets the range of times outside which data will be rejected by
various filter-applying action commands (edit inputs, read).
Overrides self-scaling of the time axis on plots.  Typing
"timerange" without arguments removes any restriction on the
timerange.