I can't seem to find any reference to a cel script command that will turn on/off the labeling of Locations. Is it me?
There _is_ a switch for it, in these two cel urls notice the last segment; the "128" after the "lm":
"cel://Freeflight/2004-04-16T06:00:59.52963?x=pLU1IM6Z33qvDA&y=ybll/4ZcbA&z=p2C/MIg++RUH&ow=0.737476&ox=0.555869&oy=-0.362626&oz=-0.125066&select=Sol:Earth&fov=25.000002&ts=0.000000<d=0&rf=122755&lm=128"}
"cel://Freeflight/2004-04-16T06:00:59.52963?x=pLU1IM6Z33qvDA&y=ybll/4ZcbA&z=p2C/MIg++RUH&ow=0.737476&ox=0.555869&oy=-0.362626&oz=-0.125066&select=Sol:Earth&fov=25.000002&ts=0.000000<d=0&rf=122755&lm=0"}
...that "128" is the switch. For now I'm just repeating an identical cel url with the switch on and off to toggle the locations, but the drawback is that you pretty much need to have timerate=0 to do this (and stay sane)
-Rich