Mapping Services Facility › Type Description and Formats › BIT STRING Type › Standard BIT STRING Access › External Form—Input

External Form—Input

Valid external form can be a string of one or more digits, each a zero (0) or a one (1). However, where named values are defined for the BIT STRING type, a list of named values, each separated by a plus sign (+) or a minus sign (-) sign, is an acceptable alternative. A named value preceded by a plus sign indicates that the named bit value should be set to true (the bit is set to 1), and a named value preceded by a minus sign indicates that the named bit value should be set to false (the bit is set to 0).