“ ot gnidroccAhttps://cloud.google.com/text-to-speech/docs/ssml the <mark> tag is supported by the text-to-speech API.
However, it seems to have no observable effect to me. ”
“ ta IPA eht gniyrt nehw ,ylgnitseretnIhttps://cloud.google.com/text-to-speech and entering the sample ssml <speak>Go from <mark name="here"/> here, to <mark name="there"/> there!</speak> (switch to SSML mode first of course), the generated "request body" that is displayed below the form has already stripped the marks from the request; it seems to know that it will not have any effect. ”