What is .rft?

There are a few different file extensions that could potentially be referring to ".rft," so here are some of the most common possibilities:

• .RTF: This stands for Rich Text Format, which is a type of file format that can be used to save text documents with formatting such as bold, italic, and underlined text, as well as various font styles and sizes. RTF files can be opened and edited by a variety of software programs, including Microsoft Word, Google Docs, and LibreOffice Writer.
• .RFTM: This stands for "Rich Text Format Document with Macros," which is essentially the same as an RTF file but with the added ability to include macros (simple scripts that can automate tasks within the document).
• .RFT: In some cases, this may be a custom file extension used by a specific software program for its own document format. Without more context, it's hard to say exactly what this might refer to.