# Question about GNU Radio block documentation in GRC **URL:** \ **Category:** GNU Radio\ **Created:** [November 29, 2012, 10:34pm UTC](https://www.ruby-forum.com/t/question-about-gnu-radio-block-documentation-in-grc/226428 "2012-11-29T22:34:33Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [November 29, 2012, 10:34pm UTC](https://www.ruby-forum.com/t/question-about-gnu-radio-block-documentation-in-grc/226428/1 "2012-11-29T22:34:33Z")
Hi list, I recently compiled gr-howto-write-a-block (from git master) and its doxygen documentation is not loaded/displayed in gnuradio-companion. The python code is installed in “${GR\_PYTHON\_DIR}/howto”. See: [http://gnuradio.org/cgit/gnuradio.git/tree/gr-howto-write-a-block/python/CMakeLists.txt#n34](http://gnuradio.org/cgit/gnuradio.git/tree/gr-howto-write-a-block/python/CMakeLists.txt#n34) [http://gnuradio.org/cgit/gnuradio.git/tree/gr-howto-write-a-block/swig/CMakeLists.txt#n51](http://gnuradio.org/cgit/gnuradio.git/tree/gr-howto-write-a-block/swig/CMakeLists.txt#n51) In gnuradio-companion, when the python documentation is loaded, it is assumed the blocks are in the “gnuradio” subpackage. See: [http://gnuradio.org/cgit/gnuradio.git/tree/grc/python/extract\_docs.py#n32](http://gnuradio.org/cgit/gnuradio.git/tree/grc/python/extract_docs.py#n32) In case I didn’t miss something, what is the preferred way to fix this ? (I say “fix” because I would expect the howto block to show its doc in grc by default). Solution 1: install third party blocks into the “gnuradio” package (i.e. installing to “${GR\_PYTHON\_DIR}/gnuradio/howto”). Solution 2: modify gnuradio-companion so it can search outside the “gnuradio” package. For testing purposes, I made the attached patch. Regards, – Julien Olivain.