clear ink from attr

[boriel]

Code:

ink 0
DIM a as Ubyte = 5
PRINT at selecty,selectx;a bAND 1

this just prints black ones to the screen

And that's ok.
bAND is an OPERATOR. It calculates (a AND 1). The difference with normal AND is that, AND uses boolean logic (0 = False, any other value = True).
bAND is for BINARY (or BITWISE) operations (hence the 'b' Prefix). You have bAND, bOR, bXOR and bNOT.

For what you want, do as LCD suggested:

Code:

PRINT AT y, x; OVER 1; PAPER 8; INK value; " "

This should do the trick.