Operation Manual

246 Creating Animations
Envelope type drop-down menu lets you select your envelope type, allowing you
to then define a profile shape for that envelope in the pane. In most instances, an
"All Envelopes" option can be used to affect a variable rate of change for all
envelopes simultaneously.
The process or editing an envelope is identical, irrespective of envelope type. By
default, any envelope is applied linearly (i.e., they change at a uniform rate over
time) so you have to manually edit the envelope to apply a non-linear rate of
change.
The differing rates of change of can be illustrated with a Position Envelope
between two simple circles.
linear
(default)
non-linear
(manual editing of profile shape)
To apply an envelope:
1. Display the Easing tab.
2. Select an object from the Storyboard tab to which you want to apply
the envelope.
3. Select a profile from the Envelope type drop-down menu (Easing tab).
The displayed profile will be linear by default (see above), unless
you've applied the envelope previously.