/usr/share/hol88-2.02.19940316/contrib/auxiliary/rules.ml is in hol88-contrib-source 2.02.19940316-14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | let EXP_UNIQUE_RULE = (CONV_RULE (REDEPTH_CONV BETA_CONV)) o
(CONV_RULE (REDEPTH_CONV EXISTS_UNIQUE_CONV));;
|