h6. [[BASICTrans]] h6(. » [[BASICTrans SWI Calls|SWI Calls]] h6((. » BASICTrans_Error h2. BASICTrans_Error h5. (SWI &42C80) |_<^{width:4em}. Entry | | |<^. R0 |<^. Pointer to tokenised keyword/help term | |<^. R1 |<^. Pointer to program name (BASIC or BASIC64) | |<^. R2 |<^. Pointer to the lexical analyser's tables | |_<^{width:4em}. Exit | | |<^. R0 |<^. Corrupt | |/2<^. R1 |<^. Zero: Message was displayed | |<^. Nonzero: Message not displayed | |<^. R2 |<^. Corrupt | h4. Use The purpose of this call is to lookup and output (via [[OS_WriteC]]) a help message for a given BASIC keyword.