Apple Motion 5.1.1 - Manual (Page 45)

Chapter 2 Introduction to the Motion interface 45
Some HUDs contain controls for effects. For example, the 2D Particle Emitter HUD contains
a single control that provides a visual way to manipulate three particle system parameters:
Emission Range, Emission Angle, and Speed. These unique controls allow you to set multiple
parameters simultaneously and in an intuitive way.
When multiple effects are applied to an object, you can cycle through the effects’ HUDs. A small
downward-facing arrow next to the HUD name indicates that additional effects are applied to
the selected object.
The arrow indicates
multiple control sets
for the selected object.
Note: It is easier to enter a specific value for a slider parameter in the Inspector.
Display a HUD
Do one of the following:
m Select an object, then choose Window > Show HUD (or press F7).
m Select an object, then click the Show/Hide HUD button in the toolbar (to the right of the timing
display).
m Press D.
Switch between HUDs of a selected object
Do one of the following:
67% resize factor