stamp(scope, token, value)
scope:the path of the node to get the value from.
token:the name of the node to get the value from.
value:the default string to use if token not exist.
ex).
stamp("../copy1", "sides", 5)
stamp("..", "fuzzy", 0.5)
stamps(scope, token, value)
scope:the path of the node to get the value from.
token:the name of the node to get the value from.
value:the default string to use if token not exist.
ex).
stamps("../copy1", "name", "defaultname")