Define beginning and end of a ControlID declaration block.
This special block is used to define User Interface (UI) IDs to be used for controls. See UI module for addition info about controls.
The very first control ID will start from value %WM_USER unless a numeric expression is specified.
%ID_Label1 [= Numeric Expression]
%ID_TextBox1 [= Numeric Expression]
%ID_ListView1 [= Numeric Expression]
%ID1, %ID2, %ID3
Numeric equate name must start with % sign.
If numeric equate value is not specified, the last value used incremented by 1 will be assigned.
It is recommended to not specify any Numeric Expression in order to use %WM_USER based control ids.