The high-level Voice Text API works with any text-to-speech engine. It uses the following interfaces and functions of the low-level API
PitchGet/Set
SpeechGet/Set
VolumeGet/Set
BookMark
TextDataDone
TextDataStarted
AudioPause
AudioReset
AudioResume
ModeGet
Register
TextData - Tagged text. The only required tag is \mrk=\
UnRegister
AboutDlg
GeneralDlg
LexiconDlg
TranslateDlg
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AttribChanged
AudioStart
AudioStop
Visual