Hello everybody,

after drawing a complex map of one show cave, I would like to add new standard symbols to therion. These should include:

line edge - should be used to draw other then rock edges, e.g. wall structures in elevation. There is already rock-border -- rock-edge pair, there is general border symbol but no general edge symbol.

line rope - already discussed here, just line point option anchor on|off should work also

line handrail - this symbol already exists in some cave symbol sets. A line with dots in plan, in elevation some standard 1m tall handrail would be drawn.

point handrail - used to draw handrail in cross-sections

line steps - should be used in both, plan / elevation projections. In plan, this line would surround steps area and steps would be drawn parallel to the first line segment. In elevation, 20cm steps would be drawn.

line path - used to draw concrete or other path in caves, where it was built. If it will be closed curve, it will be filled with "area path". See below.

area path - fill for path areas. It would be automatically applied for closed line steps/path in plan projection.

Also should be added:

line rope-ladder

line fixed-ladder

line via-ferrata

point via-ferrata

Do these symbols make sense? Any comments? Any other symbols, that should exist in the standard therion library?

Thanks a lot for the feedback, S.