Double Density Mode All of the examples so far in this chapter have been in the single density bit image mode (480 dots per line). However, you can use dou- ble density (960 dots per line) to print graphics in Commodore mode. You can activate double density with the code CHR$(2). To cancel dou- ble density, use the code CHR$(1), which returns you to single density. Adding this line to any of the programs in this chapter will allow you co see double density bit image graphics: 15 PRINT#4,CHR$(2) Again, to return to single density, use CHR$(1). 80