To expand on Martin’s example, there is perhaps a little more to it.
Refer to pg 106 of Therion Book
Such an area could be defined in your scrap drawing by a line border subtype
invisible.
The area will be called u:filled
And definition of colour is identical as definition of blue water in wiki of
Therion.
So, for an area u:filled, include in your layout…
code metapost
def a_u_filled (expr p) =
T:=identity;
thfill p withcolor (0.6, 0.8, 1);
enddef; %define the area symbol called filled
initsymbol("a_u_filled") %initialise the area symbol called filled
def a_u_filled_legend =
a_u_filled<oops, I cannot find the code for this right now, but
it should be simple – fills box with colour>
enddef; %to include the u:filled symbol in
the legend
endcode
To select a colour definition you could refer to
https://therion.speleo.sk/wiki/tips#rgb_to_therion_colour_mapping_calculator
And to define the text you want to appear in the legend, include this in your
thconfig…
text en “area u:filled” “filled passage”
text de “area u:filled” “german words for filled passage”
Bruce
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