questions on creating an assembly

Hi Larry,
While creating the modular doc toolkit I just posted, a couple of questions
came up about the assembly elements.

1.  An output element cannot just have a renderas attribute, it must also
have an outputformat.  If one wants the same renderas for all outputs, then
outputformat must be set to "ALL".  I'm wondering of outputformat could be
optional, with the meaning that if it is not present on an output element,
then the output element applies to all outputs.

2.  I'm wondering if the indirection provided by a module element pointing
to a resource element which then points to a fileref is always necessary.
It seems the module element could accept fileref insted of resourceref for
those who don't want to separate their resources into a