- $_[2] is an alias to the current key. Nothing prevents you
- from changing it, but be aware that there lurk dangerous
- side effects. For example, it may rightfully be readonly if
- the key was a bareword. You can get a copy instead by
- passing "copy_key => 1" to "wizard", which allows you to
- safely assign to $_[2] in order to e.g. redirect the action
- to another key. This however has a little performance
- drawback because of the copy.
+ Finally, if "op_info => $num" is also passed to "wizard", then one
+ extra element is appended to @_. Its nature depends on the value of
+ $num :