The Zed Language
The language documents:
- provide an overview of the Zed language,
 - describe Zed's dataflow model,
 - explain Zed's data types,
 - show the syntax of statements that define constants, functions, operators, and named types,
 - describe the syntax of expressions and search expressions,
 - explain lateral subqueries,
 - describe shaping and type fusion, and
 - enumerate the operators, functions, and aggregate functions in reference format.