Pinnacle Speakers DEKO500 User Manual

119

The 

font

 parameter specifies an object created by the 

font

 command, and the

look

 parameter specifies an object created by the 

look

 command.

You create an object with a command. For example, the 

rgb

 command creates a

color object:

rgb red= green= blue=

The elements of an object correspond exactly with the of the command that created it.
The parameters of the 

rgb

 command represent the amounts of red, blue and green

that make up the color.

You can assign an object to a variable:

$gold = rgb 100 100 0

You can specify an object parameter with an embedded command, using parentheses:

ramp top_left=(rgb 60 60 0)

To access an element to edit its value or to assign it to a variable for use elsewhere,
use the element operator.

To edit 

$gold

 to re-specify the amount of green:

$gold:green = 80

To assign the green element of 

$gold

 to the variable 

$grn

:

$grn = $gold:green

A list parameter, also known as a repeating parameter, specifies a list of one or
more values. Depending on the command, the values on the list may or may not be of
the same type. A command can have no more than one list parameter, which is
usually the last parameter.

The 

message

 command has a list parameter that specifies a list of

strings to output on the Status Bar:

message list=

message

"

Enter

" "

file

" "

name

" "

of

"

$song

In Deko500, a variable name can include any upper or lower case alphanumeric
character as well as the special character, underline (_). The first character is always a
dollar sign ($), and the character immediately after the dollar sign cannot be a
number.

To make macros easier to read and understand, it’s a good idea to use variable names
that are readily associated with the values they represent. For example, it’s easy to
guess what these variables are used for:

$age

$name

$phone

You do not explicitly declare a variable’s data type; the data type is determined when
a value is assigned to the variable.

These examples illustrate how variable assignment determines data type: