doc-src/IsarImplementation/Thy/ROOT.ML

clarified "this_name" vs. former "reset" feature -- imitate the latter by loading other session sources directly;

use_thys [
  "Eq",
  "Integration",
  "Isar",
  "Local_Theory",
  "Logic",
  "ML",
  "Prelim",
  "Proof",
  "Syntax",
  "Tactic"
];