[Therion] Using metapost code examples

[Martin Budaj]

> Size canging/definition of a single block is, as far as i know, not possible and not projected?

You can do it simply by using -scale xl option (or -scale s etc.) for
(almost) any point symbol.

> The problem was (with other symbols it is still the case, a solution could be, for example an layout command for small symbols) that with small caves in small scales the normative symbol size is too large, so it might happen that you only see a small part of the symbol in a narrow passage on small scale.

Try playing with base-scale layout option. It should address exactly this issue.

martin