The command RCLR(color source) returns a syntax error.
The RWINDOW(n) command is not documented in the manual. But it works analog to C128 mode Basic 7.0.
Thanks for the hint.
The function RCLR(n) was renamed to RCOLOR(n) for the C65 and is now documented as RCOLOR.
The RWINDOW(n) is already documented (alphabetically between RUN and SAVE)
The command RCLR(color source) returns a syntax error. The RWINDOW(n) command is not documented in the manual. But it works analog to C128 mode Basic 7.0.