[PD] scale from maxlib - undocumented feature

[Charles Henry]

> course it's a really handy tool. but since I can't look at an object
> inside it's code, there was no way for me to know about it.

That is interesting to know.  I didn't know that it was a standard
behavior either.... but since you've brought it up, now I'd like to
know how the code allows this as well.
I wouldn't expect it to be found in each and every external, so I
would assume it is in the Pd code itself, with behavior of non-signal
inlets in general

(~half hour later)
... so I tried reading the code for myself, and don't get it....  I
thought I might find it in m_pd.c/m_pd.h , but for the very most part,
the pd data structures go over my head.
all those structs and unions.... and m_pd.h is actually longer than
m_pd.c (seems like m_pd.h is a swiss-army knife of headers/definitions
that applies to more files than one)... blows my mind :P

I will have to read some more later~
Chuck