Am 04.12.2018 um 03:57 schrieb Kenneth:

> That macro construction looks like a compact 'shorthand' way to avoid coding
> separate #write/#read statements (doing away with #read altogether), while
> producing the same results (?). Pasting that short macro *into* scene code would
> do away with #include as well.

The macro is /not/ a shorthand for a `#read`/`#write` combination - the 
`#include` is indispensable. You can put it directly into the scene, but 
you can't do without it.

The primary trick here is that e.g. instead of writing the keyword `png` 
verbatim in your scene, you can instead include a file that contains the 
keyword (and nothing but the keyword).

The secondary trick is that you can create such a file with arbitrary 
content "on the fly" using `#write`.

Wrapping it all in a single macro is just a matter of convenience.

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