CTONE
Format: CTONE (X)
Supported by: COMX BASIC V1.00
Similar commands: -
This is in the form, CTONE (X), where the numeric expression X is either zero or non-zero. If X is non-zero, the colour-tone effect is turned on such that the screen colour remains unchanged but the colour of the characters displayed is similar to the screen colour with a different degree of brightness. If X is zero, the colour-tone effect described above is turned off.