For papers and beamer presentations, I sometimes hide more "universal" babel blocks inside a sort of setup headline. I thought I'd done this before, but perhaps not... The idea would be like so:
* Data setup :noexport: #+begin_src R :session r load libraries read data files do universal operations #+end_src * Slide #+begin_src R :session r :exports results :results output graphics subset(larger_data_set_from_above) processing plot something #+end_src I noticed today that my :noexport: setup sections (I had a couple) were not updating. I re-defined a variable name further down in my file and it was re-using the definition from an above setup section (tagged with :noexport:). Just because I don't want it export doesn't mean I don't want to have useful stuff in the headline... Is this a bug/inappropriate setting, desirable based on how others use :noexport: headlines, or would others see value in executing babel blocks in :noexport: headlines? If I /didn't/ want it executed, I'd use :execute no. Thanks for any input, John