Unit cards are cards that have an associated quantity and unit, denoted with <> and is highlighted in green. Unit cards are standalone by default and will need the disp function to display it in the terminal.

An example of this is to convert 6.56 m to cm (using the cnvt function), which will use the syntax:

disp [text] (cnvt [expr] 6.56 <m> {<cm>})

//Expected result: 656 cm