h6. [[VDU Variables]] h6(. » ECF Block h2. ECF Block |_<^{width:4em}. Offset |_<^. Value | |>^. +0 |<^. OR mask for top ECF line | |>^. +4 |<^. EOR mask for top ECF line | |>^. +8 |<^. OR mask for next ECF line| |>^. +12 |<^. EOR mask for next ECF line| |>^. +16 |<^. OR mask for next ECF line| |>^. +20 |<^. EOR mask for next ECF line| |>^. +24 |<^. OR mask for next ECF line| |>^. +28 |<^. EOR mask for next ECF line| |>^. +32 |<^. OR mask for next ECF line| |>^. +36 |<^. EOR mask for next ECF line| |>^. +40 |<^. OR mask for next ECF line| |>^. +44 |<^. EOR mask for next ECF line| |>^. +48 |<^. OR mask for next ECF line| |>^. +52 |<^. EOR mask for next ECF line| |>^. +56 |<^. OR mask for bottom ECF line| |>^. +60 |<^. EOR mask for bottom ECF line| h4. Notes This block should be on a 64 byte boundary. h4. See also * [[VDU Variables]]