- h-line-drawer x1 x2 yprocedure
- v-line-drawer x y1 y2procedure
- filled-rect+border-drawer x y w h fill-color edge-colorprocedure
- path-drawer cmds #!key filled?procedure
cmds is a list of path commands from gg-backend: path:move-to, path:line-to, path:curve-to, path:arc, path:close.