Cmd			Status		Args
---			------		----

quit			done
start			done
stop			done
help			done
trace			done
set
get

Register		done		argName argDesc
Unregister		done
DeclareMetadata
Ping			done		appName
SetMetadata
GetMetadata
DeclareSubscriptions
GetSubscriptions
GetRegisteredClients	done

tableLoadVotable
tableLoadFits
tableHighlightRow
tableSelectRowList

imageLoadFits
coordPointAtSky
specLoadSSAGeneric