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Atomic Expressions

  The simplest type of expression is a variable name or a constant.

    You name a variable   using a letter or an underscore, followed by zero-or-more letters, digits, or underscores. All names in Glish   are case-sensitive, so ``foo_123" and ``Foo_123" are different names. See Appendix A, page gif, for the Glish syntax and grammar.

Variable names simply evaluate to the present value (and type) of the variable; if the variable hasn't been previously set, Glish     generates a warning and sets it to F.

See § 3.2.1, § 3.3.1, and § 3.4.1 for creating numeric, string, and record constants, and § 3.1.4, page gif, for creating vector constants.

Thu Nov 13 16:44:05 EST 1997