/usr/share/hol88-2.02.19940316/contrib/prooftree/ is in hol88-contrib-help 2.02.19940316-14.
This file is owned by root:root, with mode 0o755.
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/usr/share/hol88-2.02.19940316/contrib/prooftree/help/
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/all_subgoals.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/auto_cancel.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/cancel_tac.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/compact.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/complete_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/current_goal.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/current_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/do_tac.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/do_tacf.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/move_to_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/name_current_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/new_goal.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/proven.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/remove_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/rm_proof.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/show_all_proofs.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/show_all_subgoals.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/show_tac.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/show_the_tactic.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/store_thm.doc
/usr/share/hol88-2.02.19940316/contrib/prooftree/help/entries/subgoal_tac.doc