selections, but only one may be active at a time. In this case, the DATA
CONTROL is used to select from the available options. For example,
press the OTHER key and move the cursor to the RATE field, which is a
"choice" field. Now turn the DATA CONTROL and notice that with each
step of the control, a different preset option appears.
The + and - keys
Pressing the "+" key has the same effect as turning the DATA CONTROL
one step to the right. It either increments a number in a numeric field or
chooses a new option in a "choice" field.
Pressing the "-" key has the same effect as turning the DATA CONTROL
one step to the left. It either decrements a number in a numeric field or
chooses a new option in a "choice" field.
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