LET @schedule = @schedule LET @schedule = $DEFAULT
The assignment command duplicates the intervals in an existing schedule under
a new name. If a schedule with the new name already exists, it is
overwritten. Note that the annotation is NOT copied.
The syntax
LET @schedule = $DEFAULTprovides a mechanism for placing the default interval into a schedule. This version of the copy command should used whenever you want to perform schedule algebra on a schedule that involves the default schedule.
The copy command is typically used to make a copy of a schedule before
changing it. In the following example, the schedule ALLCLEAR contains
intervals when all of the Galilean satellites are clear (not occulted,
eclipsed, or in transit). ALLCLEAR is the starting point for the derivation
of a pair of new schedules satisfying constraints specific to two of those
satellites (Io and Callisto).
IMPORT GALILEAN_VISIBLE_1990.WIN AS ALLCLEAR;
LET IO_TEMP = ALL_CLEAR;
.
.
EXPORT IO_TEMP TO IO_HST.WIN;
LET CALLISTO_TEMP = ALLCLEAR;
.
.
EXPORT CALLISTO_TEMP TO CALLISTO_HST.WIN;
FORGET SCHEDULE ALLCLEAR;