It didn't gave the drawing mode you mention, but u did actually write a program that did exactly that. It also had a print function - only worked with the Epsom dot-matrix printer we had, as I used a special control mode. Basically a character was an 8x8 array of dots drawn one column at a time by the print head. You could manually control the print head though by putting the printer into a special mode through escape codes, and then just sending binary 8-bit numbers to encode pubs you wanted to print for each column.
Thinking back I can't believe I made it work - I was only about 10 at the time. I do remember facing to stick my nose in the printer's manual for a long time. Of course printers had manuals then, not like today...
There's a good online emulator of the CII here: http://compucolor.org/emu.html