(defsimpleprim :ticks :reporter clnl-nvm:ticks)
(defsimpleprim :turtles :reporter clnl-nvm:turtles)
(defagentvalueprim :who)
+(defsimpleprim :with :reporter clnl-nvm:with)
; Colors
(defmacro defcolorprim (color) `(defprim ,color :reporter (lambda () `(clnl-nvm:lookup-color ,,color))))