Values of this type will look like: "Long File N?me.extension*". Legal long names contain no more than 260 characters and must contain at least one non-period character. The following characters are not allowed: \ | > : / " or less-than. The name must be shorter than 260 characters. The value could also be a localization variable with the format !(loc.VARIABLE).
Must match the regular expression: '[^\\\|><:/"]259|([!$])\(loc\.[_A-Za-z][0-9A-Za-z_.]*\)'.