An optional argument that specifies the order in which the graphics elements are drawn. The value can be the keyword Back or Forward or an integer that specifies the drawing order for a number of graphics elements. 1 means the object is drawn first.
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
obj = dt << Bivariate( Y( :weight ), X( :height ) );
Report( obj )[FrameBox( 1 )] <<
Add Graphics Script(
1, // draws the line first
Description( "Pen Script" ),
Pen Color( "red" );
Pen Size( 5 );
Y Function( 60 + 120 / 2 * (1 + Sine( (2 * Pi() * (x - 50)) / 22.5 )), x );
);