Schemy Lisp En DOS

SLED is a pure symbolic Lisp for DOS, derived from Kilo Lisp and modeled after Scheme, supporting symbols (up to 16 characters), pairs, lists, association lists, and special forms such as quote, define, and lambda. It lacks native numeric types, using list-based tally numerals with helper functions inc, dec, and zero?, and evaluates code eagerly with standard Lisp binding and closure semantics.