Built-in Variables
==================
Most `awk' variables are available for you to use for your own
purposes; they never change unless your program assigns values to them,
and they never affect anything unless your program examines them.
However, a few variables in `awk' have special built-in meanings.
`awk' examines some of these automatically, so that they enable you to
tell `awk' how to do certain things. Others are set automatically by
`awk', so that they carry information from the internal workings of
`awk' to your program.
This minor node documents all the built-in variables of `gawk', most
of which are also documented in the chapters describing their areas of
activity.