Online Channels versus Permanently Stored Channels Smart Select
Many times we will have real-time plots of channels which are only stored briefly on the front-end computers.
If you later want those channels in the past, nds2 returns an error.
If ndscope could cleverly switch between real-time fast online channels and permanently-stored slow offline channels (like, for example, H1:LSC-TR_X_NORM_IN1 versus H1:LSC-TR_X_NORM_INMON), that would be awesome.