[Therion] Need metapost wizard: new text label

[Tarquin Wilton-Jones]

> If you want to upload it to the wiki, im honored and please modify to your wills

There you go:
https://therion.speleo.sk/wiki/metapost#adding_custom_styled_labels_at_any_point_linepoint

Second version of the code has a custom label style like yours (dashed
for fun, and it specifies the padding and smoothing in terms of the PenA
thickness).

It supports scale, position, rotation, alignment, default styles and
custom styles like yours.

Hope this is useful.