Symbols and Literals


Table of Contents
Data Types and Predicates — testing for data types.
undefined_p, undefined_symbol_p — test for undefined types and symbols.
Literals — defined for integers, reals, strings, and symbols.
Predefined Symbols — a table.
Reserved Words — a table.
t — a logically true value.
nil — the logically false value.
gamma, phgamma — start Gamma and Gamma/Photon from the shell prompt.