clarified "bulky" sessions (again, see also 06153e2e0cdb), but note that "very_slow" is normally used together with "slow";
--- a/src/Pure/Build/sessions.scala Fri Mar 29 19:28:59 2024 +0100
+++ b/src/Pure/Build/sessions.scala Mon Apr 01 14:36:28 2024 +0200
@@ -548,7 +548,7 @@
Group_Info("slow", "CPU time much higher than 60min (on mid-range hardware)",
bulky = true, afp = true),
Group_Info("very_slow", "elapsed time of many hours (on high-end hardware)",
- afp = true),
+ bulky = true, afp = true),
Group_Info("AFP", "entry within AFP", afp = true),
Group_Info("doc", "Isabelle documentation"),
Group_Info("no_doc", "suppressed Isabelle documentation")