When editing a page of the wikipedia namespace in the monobook skin, the
key Alt-A is bound to "View Project page". This is not a good idea: most
browsers bind Alt-A to "Select All", and arguably that's a much more
common action when editing an article, and certainly the one the user
expects. In fact, "View Project page" is almost non-sensical in that
situation, while "Select All" in order to copy the article text into an
editor is standard.
While I personally like monobook a lot, I would generally question the
design decision to override the browser's and operating system's key
bindings and associate them with site actions. Most users expect key
bindings to be specific to the application or the operating system, not
to the currently visited site. Furthermore, some key bindings, such as
Alt-D for the very rare "Delete article" action, clearly do more harm
than good. At the very least, key bindings should be configurable in the
preferences and switched off by default.
Cheers,
Axel