ocr: Key pressed Program OS_Byte 220 state OS_Byte125 OS_Byte 126 OS_Byte 124 OS_Byte 247 state No OS_Byte: 230 state Yes OS_Byte 229 state Escape actions Input stream Discard OS_Byte 200 state No OS _Byte 14,6 state Yes Escape event Set escape flag Clear escape flag Language environment ar program Escape handler