One of the oldest typographic ornaments, in early Greek and Latin texts, the hedera was used as an inline character to divide paragraphs, similar to the pilcrow. It can also be used to fill the whitespace that result from the indentation of the first line of a paragraph, on a line by itself to divide paragraphs in a highly stylized way, to divide lists, or for pure ornamentation.
In more modern historic books, line breaks became more common as paragraph dividers, and fleurons became popular to create ornamented borders. Fleurons were crafted the same way as other typographic elements were: as individual metal sorts that could be fit into the printer's compositions alongside letter and numbers. This saved the printer time and effort in producing ornamentation. Because the sorts could be produced in multiples, printers could build up borders with repeating patterns of fleurons.
Four fleurons are included in the Unicodedingbats block: white florette U+2740 (❀) (HTML: ❀), eight petalled outlined black florette U+2741 (❁) (HTML: ❁), floral heart U+2766 (❦) (HTML: ❦), and rotated floral heart bullet U+2767 (❧) (HTML: ❧). Another fleuron is found in the miscellaneous symbols block: reversed rotated floral heart bullet U+2619 (☙) (HTML: ☙). There are two rosettes in the miscellaneous symbols and pictographs block: rosette U+1F3F5 (🏵) (HTML: 🏵) and black rosette U+1F3F6 (🏶) (HTML: 🏶).
Designers continue to produce fleurons for use in digital typefaces. Typefaces with fleurons available online include: