IBM Program Number 5798-DQZ
Integers, bignums, floating-point numbers, strings, vectors.
States (like Scheme continuations).
Partial Applications (a function combined with some pre-set arguments to yield
a function of fewer arguments).
Lexical scoping is the default.
Dynamic scoping available with FLUID declaration.
Operators are evaluated (as in Scheme, no function-value cell).
Saved states can be resumed to create arbitrarily complex control structures.
Alternate-heap garbage collector.
Carefully designed to be equivalent in semantics to interpreter.
Screen-oriented structure editor is the default user interface.
Interactive stepper / debugger allows two-way interaction with source program
through the structure editor.
Interfaces to CMS, FORTRAN, GDDM and VM / Prolog.
All IBM 370 architecture machines.
VM SPS or later
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