Which should you specify in a non-Unicode system when opening a file in TEXT MODE?

In a non-Unicode system, when opening a file in TEXT MODE, it is essential to specify the ENCODING addition. This is because non-Unicode systems do not have a standardized way to interpret encoding. By specifying the correct encoding, the system knows how to correctly read and interpret the text data in the file according to the character set being used.

Encoding determines how characters are represented in bytes and is crucial for ensuring that the data is accurately processed. If the encoding is not specified, the system may misinterpret the byte sequences, leading to errors or incorrect data being read from the file. This aspect of handling text files is particularly vital in environments where multiple languages or character sets may be utilized.

Other considerations such as storage order, code page, and byte order are relevant in specific contexts but do not directly apply when opening a file in TEXT MODE within a non-Unicode system. Storage order typically pertains to how multi-byte characters are arranged, code page refers to a specific encoding scheme, and byte order would be more relevant in scenarios involving binary files with specific byte layout requirements.