What bookdealers really mean. A dictionary by Tom Congalton and Dan Gregory (Between the Covers), with additions from other sources
"Calligraphy has been defined by Stanley Morison (in the Encyclopaedia Britannica) as ‘freehand in which the freedom is so nicely reconciled with order that the understanding eye is pleased to contemplate it’. In our context the noun and its adjective calligraphic are used not only to denote a manuscript whose beauty of script is its principal attraction, or a manual of penmanship, or an engraved writing-book, but also any fancy penwork in a manuscript or inscription or any non-representational flourishes in an engraving." (Carter, ABC for Book Collectors)
Schönschrift, Schönschreibkunst. Der Kalligraph ist über das saubere, gleichmäßige Schreiben hinaus bemüht, die Buchstaben künstlerisch auszugestalten.