Rich text format (RTF),
Definition of Rich text format (RTF):
A document format that allows text to be stored with a significant quantity of information about its font, size, layout, etc., in a form that can be transferred between different (types of) machine and/or operating systems; abbreviated RTF.
Microsoft developed text-formatting (markup) standard for word processor files containing enhanced text. RTF files can be read by all compatible word processors and application software, allowing easy exchange of digital documents.
Meaning of Rich text format (RTF) & Rich text format (RTF) Definition