[Therion] Symbols without map editor, polygon line filling?

[Bruce]

> according to http://therion.speleo.sk/wiki/doku.php/exportselectionformat 
this happens as centreline (polygon draws) and map drawings are 
fundamentally different, if I understand this correctly; is it possible 
there is no way to export them 'layered', I mean the map-scraps 
translucent over the centerline? I would like in some circumstances to 
have it printed within the resulting mine plan.

This is easily done.  You need to define a map with just scraps and define a
separate map with just centreline(s).  Then select both of those maps for
export (or combine those two maps, and select the combination map for
export).

I see the table on that wiki page is a bit confusing and contains an error
on the map - map - centrelines line.  I will try to fix.

> Another question: I am putting line points over the background image 
centerline 'wings' (l+r). Is there, perhaps, a function I do not know of 
which sets the line-points automatically over the centerline left- and 
right-wings?

No, you have to draw the walls manually for pdf output (although Loch will
display the LRUD as smooth walls).

Bruce