Generate documentation cache for all functions in directory.
A documentation cache is generated for all functions in directory
which may be a single string or a cell array of strings. The cache is used
to speed up the function lookfor
.
The cache is saved in the file out_file which defaults to the value doc-cache if not given.
If no directory is given (or it is the empty matrix), a cache for built-in functions, operators, and keywords is generated.
See also: doc_cache_file, lookfor, path.
Package: octave