punctuation poem

Visual poem created entirely or primarily of punctuation marks and other
closely related characters. (My favorite of his punctuation poems, entitled
“Where,”5 consists of eight pieces of punctuation: seven serpentine question
marks (each missing the underlying dot and, therefore, resembling the
symbol for a glottal stop) followed by a single complete question mark.)
(Most of these poems have few words, and the one above is a punctuation
poem, which doesn’t have any words at all.)