getUserProp <node> <key_string>
setUserProp <node> <key_string> <value>
getUserPropVal <node> <key_string> asString:<boolean>
setUserPropVal <node> <key_string> <value> quoteStrings:<boolean>
getUserPropBuffer <node>
setUserPropBuffer <node> <string> See Node User-Defined Properties and Methods for more information on these methods.