15. 11. 2019 v 14:33, Bill Gee <bgee@campercaver.net>:

Regarding the strange offsets of [0 0 ft] - That is intentional. If I did not do the offset with "above" or "below", then the transparency effects did not work. It was not clear which passage was above or below. They were all mashed together as if they were one layer. A true offset was not, in my judgement, necessary.

There is a way you may use to organize layers of maps with above and below:

map layer_3.map -projection plan -title "Radavc - layer 3“

...

radavc_2012_w_plan_s2d

preview above layer_1.map

preview above layer_2.map

preview below layer_4.map

preview below layer_5.map

preview below layer_6.map

endmap

map layer_4.map -projection plan -title "Radavc - layer 4“

….

It means that you define what is relative position of a map definition to another maps which create an overall map.

And one last question, just because I am curious: Does the naming convention of "name@place" extend to more than one layer? Is something like "name@cave@space" possible? Could I write something like "AllieMainPlan@AllieSpringCave@BCRPlanMap"?