| Chapter Introduction | |
| X04AAF | Return or set unit number for error messages |
| X04ABF | Return or set unit number for advisory messages |
| X04ACF | Open unit number for reading, writing or appending, and associate unit with named file |
| X04ADF | Close file associated with given unit number |
| X04BAF | Write formatted record to external file |
| X04BBF | Read formatted record from external file |
| X04CAF | Print real general matrix (easy-to-use) |
| X04CBF | Print real general matrix (comprehensive) |
| X04CCF | Print real packed triangular matrix (easy-to-use) |
| X04CDF | Print real packed triangular matrix (comprehensive) |
| X04CEF | Print real packed banded matrix (easy-to-use) |
| X04CFF | Print real packed banded matrix (comprehensive) |
| X04DAF | Print complex general matrix (easy-to-use) |
| X04DBF | Print complex general matrix (comprehensive) |
| X04DCF | Print complex packed triangular matrix (easy-to-use) |
| X04DDF | Print complex packed triangular matrix (comprehensive) |
| X04DEF | Print complex packed banded matrix (easy-to-use) |
| X04DFF | Print complex packed banded matrix (comprehensive) |
| X04EAF | Print integer matrix (easy-to-use) |
| X04EBF | Print integer matrix (comprehensive) |