[Therion] map-bg transparent

[Bruce]

>> Is it possible to get therion to create a map with a transparent
background?
>>
>> Something like 'map-bg off' perhaps?

>It will be supported in the next snapshot (if map-bg is white or
>omitted in layout).


Thanks Martin
I think that sometimes a white opaque background would be desirable.
How about;

map-bg [100 100 100] #or
map-bg [100]         #gives an opaque white background, and
map-bg off           #gives a transparent  background?

ie similar in concept to   map-header-bg off

If this is more complicated to code then your suggestion would be a good
interim solution.
Bruce