Before you can customize a graph, you must determine which template is used to create the original graph. You can do this by submitting the ODS TRACE ON statement before the procedure statements that create the graph. The fully qualified template name is displayed in the SAS log. Here is an example:

ods trace on;
ods graphics on;

proc reg data=sashelp.class;
   model Weight = Height;
run; quit;

The preceding statements create the following trace output, which provides information about both the graphs and tables produced by PROC REG:

   Output Added:
   -------------
   Name:       NObs
   Label:      Number of Observations
   Template:   Stat.Reg.NObs
   Path:       Reg.MODEL1.Fit.Weight.NObs
   -------------

   Output Added:
   -------------
   Name:       ANOVA
   Label:      Analysis of Variance
   Template:   Stat.REG.ANOVA
   Path:       Reg.MODEL1.Fit.Weight.ANOVA
   -------------

   Output Added:
   -------------
   Name:       FitStatistics
   Label:      Fit Statistics
   Template:   Stat.REG.FitStatistics
   Path:       Reg.MODEL1.Fit.Weight.FitStatistics
   -------------

   Output Added:
   -------------
   Name:       ParameterEstimates
   Label:      Parameter Estimates
   Template:   Stat.REG.ParameterEstimates
   Path:       Reg.MODEL1.Fit.Weight.ParameterEstimates
   -------------

   Output Added:
   -------------
   Name:       DiagnosticsPanel
   Label:      Fit Diagnostics
   Template:   Stat.REG.Graphics.DiagnosticsPanel
   Path:       Reg.MODEL1.ObswiseStats.Weight.DiagnosticPlots.DiagnosticsPanel
   -------------

   Output Added:
   -------------
   Name:       ResidualPlot
   Label:      Height
   Template:   Stat.REG.Graphics.ResidualPlot
   Path:       Reg.MODEL1.ObswiseStats.Weight.ResidualPlots.ResidualPlot
   -------------

   Output Added:
   -------------
   Name:       FitPlot
   Label:      Fit Plot
   Template:   Stat.REG.Graphics.Fit
   Path:       Reg.MODEL1.ObswiseStats.Weight.FitPlot
   -------------

This is also illustrated in Example 21.5 and the section The ODS Statement in Chapter 20, Using the Output Delivery System.