This file contains a list of problems with the current help-in-m-files code:

  * The 'list_functions' searches the path for files with 'm', 'oct', or 'mex'
    extensions to generate a list of functions. This doesn't always work as
    some oct-files contain more than one function.
    
  * We should skip functions that start with __ when generating caches, and
    when searched without caches in 'lookfor'.