> Jan Willem Flamma <mailto:jwfregister@icloud.com>
> 14. Oktober 2016 um 10:12
> Dear list members,
>
> I create all my MetaFun drawings in a separate environment file where 
> each individual drawing sits inside a start/stopbuffer. This allows me 
> to easily use those drawings in all my documents using 
> \processMPbuffer[name]. Works just fine.
>
> However, I also wish to have all the drawing available in a pdf file 
> (each drawing on a separate page). This allows me to split the pdf and 
> use the drawing elsewhere (e.g. in a Powerpoint) or include page(s) 
> from the pdf in another document.
>
> The below MWE represent my MetaFun drawings file.
> The idea is that by uncommenting the \enablemode[makepdf] I can create 
> the pdf file with drawings. It seems however that startMPpage does not 
> accept buffers (I also tried processbuffer and processMPbuffer).
>
> Is it possible to somehow make this work?
You can use

     \startTEXpage
         \processMPbuffer[…]
     \stopTEXpage

but loading a buffer in MPpage doesn’t work because the content of the 
environment
is just passed to MetaPost and buffers can’t be loaded inside MetaPost 
code unless
Hans adds a function for this, e.g.

     \startMPcode
         buffer("mybuffer")
     \stopMPcode

Wolfgang