Variables and Fields
====================

   `awk' variables are dynamic; they come into existence when they are
first used.  Their values are either floating-point numbers or strings.
`awk' also has one-dimension arrays; multiple-dimensional arrays may be
simulated.  There are several predefined variables that `awk' sets as a
program runs; these are summarized below.

Menu

Fields Summary

Input field splitting.

Built-in Summary

`awk''s built-in variables.

Arrays Summary

Using arrays.

Data Type Summary

Values in `awk' are numbers or strings.