This Supplement describes the additions to the SPROGS system on release of Version III. The only changes to the existing system are:
SCALA NULSET SETIO LINK parameter in macro Assignment of LP1 LPGRAF
All other features are additional to Version II. References to relevant sections of the existing manual will be prefixed by an asterisk (*) and Supplement references by 'S' (*4.1 or S4.1). Appendices in the existing manual will be prefixed by 'A'(A2).