Summary
- clarified signature: re-use store/cache from build results;
- tuned signature;
- clarified signature: persistent Node.source / Snapshot.source;
- more examples;
- proper filter (amending fb4215da4919);
- clarified conditions: no_build is ok for presentation if "all_current" holds; tuned;
- tuned;
- tuned signature;
- clarified presentation_sessions: work with partial results;
- tuned signature: removed unused operations;
- tuned;
- tuned comments;