When Isok is installed as an extension, local copies of the documentation are installed. The pg_config PostgreSQL client command provides an easy way to find the documentation.
Example B.1. Finding the Documentation of Locally Installed Extensions
$ printf '\nExtension documentation is located in:\n%s\n\n' $(pg_config --docdir)/extension/
Extension documentation is located in:
/usr/share/doc/postgresql-doc-15/extension/
$ ls $(pg_config --docdir)/extension
pg_isok--1.0.0.config pg_isok_html pg_isok_usletter.pdf
pg_isok_a4.pdf pg_isok.txt
$ printf '\nThe URL used to read the local HTML documentation is:\nfile://%s\n\n' \
$(pg_config --docdir)/extension/pg_isok_html/html_paginated/index.html
The URL used to read the local HTML documentation is:
file:///usr/share/doc/postgresql-doc-15/extension/pg_isok_html/html_paginated/index.html