perl / perl                   Executes a Perl string as a programme

   Format:
      ;perl <string>          Executes the programme store in the <string>

   Notes:
      Perl commands can be typed in the 'main' window's command entry box. These
         commands start with the Perl sigil, a forward slash character:

         /$a = "kill"; $b = "orc"; $a . $b;

      Everything after the sigil is run as a mini-Perl programme. The
         programme's return value (if any) is then executed as an Axmud
         instruction. If there's a Perl error, no instruction is executed.
      The resulting instruction is typically a world command that's sent
         straight to the world - for example, the Perl command above sends a
         'kill orc' command. The resulting instruction can be any kind of Axmud
         instruction except for another Perl command.

      Perl sigils are turned off by default (use ';togglesigil -p' to turn them
         on again). However, this client command is always available, and you
         don't need to type the sigil:

         ;perl <Hello world!>

      When using this client command, the entire Perl programme must be enclosed
         within diamond brackets <...>:

         ;perl < $a = "kill"; $b = "orc"; $a . $b; >

      For security, the programme has limited functionality (as it's all too
         easy to accidentally execute a Perl programme that deletes files from
         your hard drive, especially when working with Axmud interfaces and
         their unpredictable outputs).

      Within the scope of the Perl programme, certain global variables and
         blessed references are available for use. The variable names all start
         with an underline so they don't clash with any variables the Perl
         programme itself defines:

         $_scriptName       > (corresponds to) $axmud::SCRIPT
         $_scriptVersion    > $axmud::VERSION;
         $_scriptDate       > $axmud::DATE;

         $_client           > $axmud::CLIENT;
         $_session          > The GA::Session from which this command was run

         $_world, $_guild, $_race, $_char
                            > Names of the current world/guild/race/character
                                 profiles (empty strings if not set)

      The following variables are only set when the Perl command is created by
         an Axmud interface:
         $_interface        > The interface object (inheriting from
                                 GA::Generic::Interface) which fired and created
                                 this Perl command (will be 'undef')
         $_line, $_stripLine, $_modeLine
                            > The line that caused a trigger to fire, the line
                                 when stripped of control sequences, and the
                                 line after it was modified by the trigger (will
                                 all be empty strings)
         $_originalCmd      > The command that caused an alias to fire (will be
                                 an empty string)
         $_keycode          > The keycode that caused a macro to fire (will be
                                 an empty string)
         $_timerExpect, $_timerTime
                            > The time intervals that caused a timer to fire
                                 (will all be empty strings)
         $_hookEvent, $_hookVar, $_hookVal
                            > The hook event that caused a hook to fire and the
                                 optional data produced by the hook event (will
                                 all be empty strings)

      A blessed reference's accessor methods are accessible to the programmes
         specified by Perl commands; for example:

         $obj = $_client; return $obj
                            > Perl programme returns a blessed reference
         $obj = $_client->mainWin; return $obj;
                            > Returns a blessed reference
         $num = $_session->number; return $num;
                            > Returns value stored in a scalar IV
         @list = $_session->profPriorityList; return $list[0];
                            > Returns the first item in a list IV

   User commands:
      perl
