Module reader 

Reader: the only way a part is read — by a make, which records every read (Read) on the node it makes, or by an editor, recording nothing.

Structs

Reader

The part as it is before one step, and the only way it is read: by a make, as of its own step, recording every read so that its node is made again when any of it changes — or by an editor, recording nothing: the part now (Part::current), or before or after one step of the last run (Part::before, Part::after), what that step is edited against and what scrubbing the timeline shows.

Reads

What a reader read of its part (Reader::recorded), each thing once.

Seen

Everything a Reader reads from (Reader::seen): the version of every target it sees, by name, and the inputs and the state its part was run with — which a placed part’s pose is read from, not built into its node, so that moving a part builds nothing.