This package contains interface units for QDOS, the operating system of Sinclair QL machines, clones and compatibles. The following units are available: qdos - allows the use of QDOS API directly sms - allows the use of SMS API directly qlutils - utility functions for better QL API to Pascal interoperability qlfloat - utility functions to convert between Pascal numeric types and QLfloats The following examples are available: qlcube - draws a 3D rotating wireframe cube with QDOS drawing functions mtinf - example of using the QDOS version of the System Variables sms_info - example of using the SMSQ version of the System Variables