Meanings of formatted text in anglès

It makes writing formatted text in a plain text editor very easy indeed.

Command-line scripts must be in plain text format, not RTF or any other formatted text file.

Both allow you to view all major Office and iWork file formats and to create and edit (with formatted text) word processing documents and spreadsheets.

They're telling us to prepare to copy text, Language is Standard, encoding is Formatted Text B.