PROJECT_ROOT_ID, POINTER_BASE
using CONSTANTS.POINTER_SOURCE and CONSTANTS.POINTER_TARGET for conection detection
using CONSTANTS.POINTER_SOURCE and CONSTANTS.POINTER_TARGET for conection detection
cleanup
using CONSTANTS.POINTER_* for popular GME related pointer names and do not allow pointername CONSTANTS.POINTER_BASE
do not allow picking existing pointer to override CONSTANTS.POINTER_BASE