RecordsEach beginrecord begins with a [[semicolon]] ({{char|;}}), followed by two [[hexadecimal]] digits denoting the length of the data in the record. The next two bytes represent the starting address of the data, in [[endianness|big-endian]] (most-significant byte first) hexadecimal. Up to 24 bytes of data follow. Then, there is a 2-byte (4-character) [[checksum]]: the sum of the other non-{{char|;}} data in the record. Finally, a record ends with a [[carriage return]] ({{char|<CR>}}), and a [[newline|line break]] ({{char|<LF>}}). Finally, the record ends withand six [[null character]]s ({{char|<NUL>}}).
The last record on the paper tape is empty (its length field is <tt>0000</tt>), with the starting address field representing the total number of data bytes contained in the transmission. The file ends with a {{char|XOFF}}. <ref>https://archive.org/details/KIM-1_Users_Manual/page/n98/mode/1up KIM-1 Users Manual</ref>
