So in your case it will be
ods graphics / reset imagemap;
title "Data Set 1 - Sales in 2015";
proc sgplot data = work.data1a (where =(online = 2));
scatter x = tradingyears y = sales2015 / markerattrs=(color=red);
label sales2015 = 'Sales in 2015';
run;
ods graphics / reset;
title;
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