`@rendition` should have a value for hanging indents

[martindholmes]

Hanging indents are not uncommon in Early Modern texts -- for instance, all the chapter headings in Dekker's Guls Horne-Booke are laid out with hanging indents:

http://eebo.chadwyck.com/fetchimage?vid=5530&page=8&width=1200

I'd suggest simple:hanging as an appropriate ident.