DAZ Studio 4.15: In the timeline, is there a way to see keyframe graphs for parameter dials like "mouth open" or "viseme F"? When I select a character's head and open "properties" in the graph panel I find entries for basic things like "twist" and listings of sub- components like  "upper teeth" and "lower jaw." Nothing for the morph dials, though.

You need to be sure that the "Types" - dropdown menu at the bottom of the timeline has "Aliases" included.  Then you will see the morphs (as Aliases).

Sonovagun. I never even noticed this button. Thanks for cluing me in! DAZ Studio is packed with useful features that I never hear about until someone describes them in a forum like this. Has anyone yet attempted a comprehensive indexed manual gathering all this info in one place?