This belongs with the notables about FINDING THE KEY.
Slowly we are beginning to understand the COMMS.
This is but one example of how to understand the COMMS.
MARKER is a literal COMMAND meaning place the MARKERS in Q messages side-by-side and the rest of the message will be revealed.
It has been postulated that RE_READ might be a COMMAND given by Q that might be interpreted as MIRROR the messages (left/right) & (up/down). That appears to be how the RE_READ command messages are revealed.