In Harlowe, variables start with
$ (for normal variables) or
_ (for temp variables, which only exist inside a single passage, hook or lambda). You can print the contents of variables, or any further items within them, using the (print:) and (for:)
Or, if you only want to print a single variable, you can just enter the variable's name directly in your passage's prose.
Your beloved plushie, $plushieName, awaits you after a long work day. You put your _heldItem down and lift it for a snuggle.
Furthermore, if the variable contains a changer command, such as that created by (text-style:) and such, then the variable can be attached to a hook to apply the changer to the hook:
$robotText[Good golly! Your flesh... it's so soft!] _assistantText[Don't touch me, please! I'm ticklish.]