The user <id> has requested access to the device's menu interface. Present some form of UI (llDialog(), hotlinked text, Facet welcome, etc.) to <id>. If using a nonstandard presentation mode (e.g. Facet), warn the user on channel 0. Note also that hotlinked text is incompatible with the controller's chat forwarding mode; depending on the device in question it may be sensible to warn users of this, too.