PPT Slide
general (based on textual structural markup)
generated automaticaly, by document author or both
portability (platform independent)
easy controllable (with standard XML/SGML) textual, structural, modular, eXtensible, interoperable with other ML, with synchronizing possibilities (sinhronized facial animation)
with defined non-markup default behavior
with standardized phoneme alphabets
voices and VoiceXML dialogs
based on host or client (voice browser environment)
with prosodic layer idependent from API