The command, '/cmdlist', does not list any such commands for making your own thumbtack. It may exist however, as some information in /cmdlist is semi-out of date.
There is however the /loc command. /loc gives you your current Loc W, Loc Up, Loc S. It takes me a bit of trial and error, but I can find the badge/plaque using it.
for easyness sake, make a bind or a macro.
/bind L "loc"
over at vidiotmaps they list the locations w/ a 3 coordinates; (Loc W, Loc Up, Loc S)
for ex.
Atlas Park Badge Top Dog 134 314 -341
im wondering if there's a command where i can place a thumbtack on a map using these 3 coords.
much thx.