docs: function parse_Rgce(blob, length, opts) {
  	var target = blob.l + length;
  	var R, id, ptgs = [];
  	while(target != blob.l) {
  		length = target - blob.l;
  		id = blob[blob.l];
  		R = PtgTypes[id];
  		if(id === 0x18 || id === 0x19) {
  			id = blob[blob.l + 1];
  			R = (id === 0x18 ? Ptg18 : Ptg19)[id];
  		}
  		if(!R || !R.f) { /*ptgs.push*/(parsenoop(blob, length)); }
  		// $FlowIgnore
  		else { ptgs.push([R.n, R.f(blob, length, opts)]); }
  	}
  	return ptgs;
  }