What a fabulous, fun book, about punctuation and about being yourself.  This charming story, told in simple sentences, on pages that resemble that rail-road track paper on which kids are first taught to print, tells of young Exclamation Mark’s struggles to fit in with a bunch of periods.  He tries all sorts of things to try to be like the others, until he meets Question Mark:  when Question Mark arrives on the scene, he is of course full of nothing but questions; he asked so many questions that Exclamation Mark is driven to shout out for the questions to stop.  So surprised by his own shout, he starts to experiment and finds all sorts of ways he can contribute to the vibrancy of language.