Great Code Giveaway...
Looks like you will need another package called DATA-OBJECTS. Not sure why it isn't listed in the dependencies, but probably because it gets loaded from some other thing during my normal start ups.At any rate:
This includes higher level data objects like BTrees, Queues, Priority Queues, Stacks, Reppy-Channels, Red-Black Trees, Single and Multi-reader mailboxes, etc, etc. Lots of really useful things in there. I see Plotter looking at thi
ngs like monitored data items, implemented in this package.