An RTF file consists of unformatted text, control words (RTF statements), and control symbols. An entire RTF file is considered a group and must be enclosed in braces. The \rtfn statement must follow the first open brace in the Help file. The numeric parameter identifies the version of the RTF standard used. For Microsoft Help version 3.1, this parameter must be 1. The \rtf statement is followed by a character set statement. The RTF character set described in this appendix corresponds to the \ansi character set statement. System default values, such as font number (\deffn statement), follows the character set statement. The following example shows these opening statements in a typical RTF file:
{\rtf1\ansi\deff0