Data(0,.Int,1,2,3) // bytes
Data(0,String,1,2,3) // same
Data(0,Int,"foo","bar") //-->foobar\0
d:=Data(0,String,"foo","bar") //-->foo\0bar\0\0
d==d // -->True: byte by byte comparison
d.copy()  //-->clone
d.len()  //-->8, 0 if empty

d.append("1").len(); //-->10  // or d+"1"
Data(0,Int,"foo","bar").len() //-->6
Data(0,Int,"foo","bar").append("1").len() //-->7

d.readString(4)    //-->"bar"
d.readNthString(2) //-->"1"
d[2,4]             //-->"o", really "o\0ba" but String sees the null

while(Void!=(n:=d.findString("bar"))){ d[n,4]="hoho" }
d.bytes() //-->L(102,111,111,0,104,111,104,111,0,49,0)

d2:=Data(0,Int,"sam");
d.append(d2).text // or d+d2