How to tell apart effect speed and duration?

[josh.projects]

Hello all,

Is there a way to tell whether the .Timing.Duration property of a
given animation effect refers to speed or duration?

For example, for a "Fly In" entrance effect, it refers to speed (the
available options in the Custom Animation pane ranging from "very
slow" to "very fast"), while for a "Change Font Style" emphasis effect
it refers to duration (the options in the Animation pane including
"Until End of Slide" and various lengths of time in seconds).

Is there another property somewhere which can tell you which one it
is? I found out that selecting "Until end of slide" as a duration
gives the .Timing.Duration property a special value of 3.4E+38, which
breaks a program I'm developing

Thanks very much.

 

[josh.projects]

Oops, I get it now... I was misled by the "speed" and "duration"
labels, .Timing.Duration just refers to how long it will take the
animation to complete.

Sorry for the inconvenience