Selects from a range of numeric or date-time values
start attribute specifies minimum
end attribute specifies maximum
step attribute specifies increment
incremental="true" attribute updates model in real time
Can be implemented as a slider, dial, list of possible values, or something else
<range ref="/settings/volume" start="1" end="11" step="0.1">
<label>Volume</label>
<hint>These go to 11.</hint>
</range>