: It appears in the raw text files ( .txt ) of documents like 10-Ks, 8-Ks, and 424B2 prospectuses.

In the context of SEC filings, this string is a piece of "garbage" or noise resulting from the process used to embed binary data (like images or PDF attachments) into plain text documents. Key Technical Details

💡 If you are trying to view a document and seeing strings like M P0,7Z... , look for the HTML version of the filing on the SEC.gov website . The text version displays these raw encoding strings instead of the intended images or tables.

If you are looking for features, are you perhaps looking for the Solid compression setting in the 7-Zip software?