h6. [[OS SWI Calls]] h6(. » [[OS_FSControl]] h6((. » OS_FSControl 39 h2. OS_ FSControl 39 h5. (SWI &29) |_<^{width:4em}. Entry | | |<^. R0 |<^. 39 (&27) | |<^. R1 |<^. Pointer to pathname | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved| |<^. R1 |<^. Preserved| h4. Use The purpose of this call is to set the User Root Directory (URD) to the given pathname. h4. Notes The URD represented by the character '&'. To unset the URD use [[OS_FSControl 44]]. h4. See also * [[OS_FSControl]] * [[OS_FSControl 44]]