Description:
This is an SGML Document Access
(SDA) attribute. SDA attributes are designed to transform HTML (and
other SGML-based documents) to the ICADD
DTD - which is used in creating accessible documents for users with
visual disabilities (rendering in Braille, large print, speech
synthesis, etc.) The attribute value specifies the name of the element
to convert this element to in the SDA element group (in this case the
'It' element - "italic emphasized text".)
Value:It (Denotes 'italic emphasized text' in SDA.)
Many people use this interchangeably with the I (Italic) element. If the
aim is to place emphasis on a passage of text, EM is the preferred
element to use - If the aim is only to explicitly italicize, then use
CSS or the I element.
Text-based or some other types of browsers may not be able to
render italics, but using the EM element instructs the
rendering engine that the element's contents should be brought to
prominence in some manner.