20#include "ROOT/RLine.hxx" 
   26   auto canvas = RCanvas::Create(
"what to do with a pad!");
 
   27   auto pads   = canvas->Divide(3, 3);
 
   29   for (
int i = 0; i < 3; ++i)
 
   30      for (
int j = 0; j < 3; ++j) {
 
   31         pads[i][j]->Draw(RLine({0.1_normal, 0.1_normal}, {0.9_normal, 0.9_normal}));
 
   32         pads[i][j]->Draw(RLine({0.1_normal, 0.9_normal}, {0.9_normal, 0.1_normal}));