The i element represents a span of text whose typical typographic presentation is italicized, for any reason other than being emphasized (see em) or being the title of a work (see cite). It can signal an alternate voice or mood, or it can otherwise set off text from the normal prose. Such uses include words used as words, letters used as letters, taxonomic designations, technical terms, key terms, foreign words, ship names, thoughts, “see” and “see also” in indexes, and various other uses.
"property-name" — adds a property to a microdata item. The name of the property can be a word or URL, and the value is the ‘content’ of the element with this attribute.
