h6. [[OS SWI Calls]] h6(. » [[OS_FSControl]] h6((. » OS_FSControl 1 h2. OS_ FSControl 1 h5. (SWI &29) |_<^{width:3em}. Entry | | |<^. R0 |<^. 1 | |<^. R1 |<^. Pointer to (wildcarded) filename | |_<^{width:3em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | h4. Use The purpose of this call is set the Library Directory (Lib) and filing system. h4. Notes If a pointer to "" is used, then the default for this filing system is used. On FileCore-based systems, the default is to search <code>&.Library</code>, <code>$.Library</code> and <code>@</code>. To unset the Library Directory use [[OS_FSControl 45]]. h4. See also * [[OS_FSControl]] * [[OS_FSControl 45]]