EscCR!1234#M
MIO video I/O port control
Status Readback
Esc*s#T
Set status readback location type
Esc*s#U
Set status readback location unit
Esc*s#I
Inquire status readback entity
Esc*s1M
Free space command
Esc&r#F
Flush all pages command
Esc*s#X
Echo command
CHAPTER 2 PCL - 9
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