Historical Features
===================

   There are two features of historical `awk' implementations that
`gawk' supports.  First, it is possible to call the `length' built-in
function not only with no arguments, but even without parentheses!

     a = length

is the same as either of

     a = length()
     a = length($0)

This feature is marked as "deprecated" in the POSIX standard, and
`gawk' will issue a warning about its use if `-W lint' is specified on
the command line.

   The other feature is the use of the `continue' statement outside the
body of a `while', `for', or `do' loop.  Traditional `awk'
implementations have treated such usage as equivalent to the `next'
statement.  `gawk' will support this usage if `-W posix' has not been
specified.