//Returns all the objtypes in the "BowcraftCarving" entry in menus.cfg:
var objtypes := GetMenuObjTypes( "BowcraftCarving" );
//Returns a subset of the objtypes in the bowcraft item crafting config file that require
//less "material" than the value of targetted_logs.amount.
objtypes := ApplyConstraint(objtypes,bowcraftconfigfile,"material",targetted_logs.amount);
//the return value is in a convienent form to use AddMenuItem()
return objtypes;