The parameter button element is an interactive element and a button which sends a parameter value if pressed. A frequently used application for the parameter button is a RF-OFF button which sends a "tx.on=OFF" to a certain device. Beside this, a parameter button also may be programmed to play a parameter setting macro.
The parameter button element never uses a button label and an icon at the same time. Either icon or label is an empty string.
If no parameter value is set, the parameter button element sends the button label or the icon name as the parameter value when clicked.
Macro Buttons
The MacroButton is a special version of the parameter button element. A isMacroButton = true marks a parameter button element to be a MacroButton. In this case the 'id' field contains the name of the M&C where to play the macro and the macro name in this case, separated by a period.