[metapost] Glyph and display and 3D fonts

[Laurence Finston]

> The input between beginfig and endfig in hollow.ldf is written to hollow.mp while that between beginchar and
> endchar is written to hollow.mf.

Sorry, this doesn't make sense.  What happens is that 3DLDF processes the input in hollow.ldf and the result of the code between beginfig and endfig goes to the MP file and similarly for (begin/end)char and the MF file.

> Gesendet: Sonntag, 24. April 2022 um 07:36 Uhr
> Von: "Laurence Finston" <Laurence.Finston at gmx.de>
> An: "Metapost List" <metapost at tug.org>
> Betreff: Glyph and display and 3D fonts