The delivery cues are the makers ( the specific symbols) that tells about the speaker should vary the speed, tonality, speak faster or slower during the speech.
These are marked on the words or on the phrase of the speech so as to indicate which part has to emphasized with what type of variation.
This also helps in better delivery of the speech as the need of remembering the variations on the parts of speech is not required with the use of delivery cues.
The combination of this human hunting and climate change at the end of the last ice age is thought to have caused the demise of Camelops here in North America, a fate shared by many other now- extinct Pleistocene mammals.