Non-delimited ASCII (ASC) file format - IBM
https://www.ibm.com › docs › SSEPGG_10.5.0 › doc
The non-delimited ASCII format, known as ASC to the import and load utilities, comes in two varieties: fixed length and flexible length.
that is CO-RECT ... well kinda, they lied also
there was no strict standard in the hay day. there was merely communal agreement on free software use of .asc and IBM didn't control it. what IBM controlled was the ASCII Table which was used in printers then consoles: thus immutable. they didn't use the .ASC extension neither did microsoft, in the day.
IBM dis-includes the free software use that .ASC might/would contain colored art and that IBM was, if i remember, NOT THE CREATOR of that file extension name and use.
also - in the day people used ".txt" not ".asc" for what IBM is describing