You can add any graphics or textual information you want to the graphical output from any platform. All I did to generate the example below is that I ran the Fit Y by X platform, I then fit the line, and then added the reference line.....without a label. Finally, I went to the toolbar and selected Text box. I positioned it on the graph where I wanted it and then typed in the text I wanted.
Once the graph was the way I wanted it, I went to the red triangle==>Script==>Write Script to Script Window. The script below is the script it generated.
Bivariate(
Y( :weight ),
X( :height ),
Fit Line( {Line Color( {213, 72, 87} )} ),
SendToReport(
Dispatch(
{},
"2",
ScaleBox,
{Add Ref Line( 161.49, "Solid", "Black", "", 1 )}
),
Dispatch
{},
"Bivar Plot",
FrameBox,
Add Text Annotation(
Text( "TGT" ),
Text Box( {2, 28, 40, 51} ),
Background Color( "White" )
)
)
)
);
This is just one way to do it.
Jim