/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/ is in freetts 1.2.2-3.
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/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/TextEngineCentral.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/TextSynthesizer.OutputHandler.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/TextSynthesizer.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/TextSynthesizerModeDesc.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/TextSynthesizerQueueItem.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/package-frame.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/package-summary.html
/usr/share/doc/freetts/api/com/sun/speech/engine/synthesis/text/package-tree.html