/usr/share/hol88-2.02.19940316/contrib/prooftree/loader.ml is in hol88-contrib-source 2.02.19940316-19.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | ( print_string `loading the "prooftree" subgoal package`;
print_newline () ;
let pack_path = (hol_pathname () ^ `/contrib/prooftree/code/`) in
loadf (pack_path ^ `prooftree`)) ;;
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