Expression 3 - ETC

Attribute Setup
Personalities may have as many as 64 attributes. Most of the 64 attributes
have names that describe the function to which they are assigned, such
as pan, tilt, gobo or strobe. The rest have either User or Reserved
designations and are unassigned.
The system software assigns each attribute to one of five categories by
default, but you can change these assignments. The category
assignments affect all fixtures in the show alike. See the list of categories
and examples of attributes assigned to them in the table below.
Categorization provides a way for you to refer to attributes during
programming in relation to their function (such as position or color) rather
than to attributes by their individual names. Use the Only command when
referencing attribute categories.
Default attribute category assignments
Position
Beam
Image
Color
None
Position attributes, such as pan and tilt, control the
direction of the fixture.
Beam attributes, such as intensity and zoom, control
the quality of the fixture’s field.
Image attributes, such as gobo and F/X, control the
shape of the fixture’s field.
Color attributes, such as cyan and magenta, control the
color of the fixture’s beam.
None are those attributes, such as speed and control,
not included in the other four categories.
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