As the name may suggest, a multipen is a pen which has multiple functions, mainly the ability to have different refill types and colours for immediate use. Most modern multipens use gravity to operate, where the user needs to turn the pen until the markings for the refill they want to expose are face down, and then press the button to expose it. Some other multipens need the cap twisted until the correct refill is exposed and others use different sliding buttons.
Multipens typically include a pencil and pen, or a variation of pen colours, or even sometimes a highlighter.
