launch Map Editor
open Template Collection. Create if necessary.
create a new Level (menu File, New)
adjust level Settings (min/max players, bounds, title)
drag Templates onto the map
arrange Templates as desired
add initial structures/units for each side
adjust side Settings (e.g., initial view, initial credits)
save as .ld
<NOTE: must save over a pre-existing Level at the moment. Fix: provide preprocessor and document use of [Levels] section of Game.ini.pp>
incorporate into a Game Database
test with HT.exe