h6. [[OS SWI Calls]] h6(. » [[OS_Byte]] h6((. » OS_Byte 25 h2. OS_Byte 25 h5. (SWI &06) |_<^{width:3em}. Entry | | |<^. R0|<^. 25 (&19) | |<^. R1|<^. [[Character Groups|Group to restore]] | |_<^{width:3em}. Exit|_<^. | |<^. R0|<^. Preserved | |<^. R1|<^. Corrupted | |<^. R2|<^. Corrupted | h4. Use The purpose of this call is to reset the definitions for a group of characters in the VDU font. h4. Notes This call restores the characters eventually redefined by the VDU 23,32-355 command in the range of 32-255. Which characters are to be reset is given in R1. To reset the entire VDU font, use [[OS_Byte 20]]. h4. See also * [[Character Groups]] * [[OS_Byte]] * [[OS_Byte 20]]