D E S C R I P T I V E S Y M B O L S x c v TLC Typed Letter, in File Copy TLS Typed Letter Signed TLSC Typed Letter Signed, in File Copy TLSX Typed Letter Signed, in Photocopy TTrD Typed Transcript of a Document TTrL Typed Transcript of a Letter TTrLC Typed Transcript of a Letter, in File Copy TTrTgm Typed Transcript of a Telegram