$ua = LWP::UserAgent->new( %options );
           This class method constructs a new "LWP::UserAgent"
           object and returns a reference to it.

           Key/value pair arguments may be provided to set up the
           initial state of the user agent.  The following
           options correspond to attribute methods described
           below:

              KEY                     DEFAULT
              -----------             --------------------
              agent                   "libwww-perl/#.##"
              from                    undef
              timeout                 180
              use_eval                1
              parse_head              1
              max_size                undef
              cookie_jar              undef
              conn_cache              undef
              protocols_allowed       undef
              protocols_forbidden     undef
              requests_redirectable   ['GET', `HEAD']

           The followings option are also accepted: If the
           "env_proxy" option is passed in an has a TRUE value,
           then proxy settings are read from environment vari-
           ables.  If the "keep_alive" option is passed in, then
           a "LWP::ConnCache" is set up (see conn_cache() method
           below).  The keep_alive value is a number and is
           passed on as the total_capacity for the connection
           cache.  The "keep_alive" option also has the effect of
           loading and enabling the new experimental HTTP/1.1
           protocol module.


##</code><code>##

       $ua->max_size([$bytes])
           Get/set the size limit for response content.  The
           default is "undef", which means that there is no
           limit.  If the returned response content is only par-
           tial, because the size limit was exceeded, then a
           "Client-Aborted" header will be added to the response.