[PD] Pd EPI clarification

[Krzysztof Czaja]

hi,

in Pd proper, there are many globals seen by linux externals, but which
are hidden from `nt' dlls, because of the lack of explicit exporting
directive.

I would like to use the routines: binbuf_match(), canvas_obj() (and
probably also the outmidi_ set), and the variables: subcanvas_class,
and newest, while retaining the possibility of a future `nt' port.

Are they part of PureData EPI (externals programming interface)
or their omission has been intended?

Krzysztof