IBM 5170 Technical Reference page 415

end-of-transmission-block (ETB). A transmission control
character used to indicate the end of a transmission block of data
when data is divided into such blocks for transmission purposes.
EOB. End of block.
EOF. End of file.
EOT. End-of -transmission.
EPROM. Erasable programmable read-only memory.
erasable programmable read-only memory (EPROM). A PROM in
which the user can erase old information and enter new
information.
error checking and correction (ECC). The detection and
correction of all single-bit errors, plus the detection of double-bit
and some multiple-bit errors.
ESC. The escape character.
escape character (ESC). A code extension character used, in
some cases, with one or more succeeding characters to indicate by
some convention or agreement that the coded representations
following the character or the group of characters are to be
interpreted according to a different code or according to a
different coded character set.
ETB. End-of-transmission-block.
ETX. End-of-text.
~
extended binary-coded decimal interchange code (EBCDIC). A set
of 256 characters, each represented by eight bits.
Glossary-13