% -*- texinfo -*-
% @deftypefn {Function File} gen_doc_cache (@var{out_file}, @var{directory})
% Generate documentation caches for all functions in a given directory.
%
% A documentation cache is generated for all functions in @var{directory}. The
% resulting cache is saved in the file @var{out_file}.
% The cache is used to speed up @code{lookfor}.
%
% If no directory is given (or it is the empty matrix), a cache for builtin
% operators, etc. is generated.
%
% @seealso{lookfor, path}
% @end deftypefn