Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n04.hea
@@ -0,0 +1,3 @@
+n04 2 128 230400
+n04.dat 16 200/mV 12 0 -7 -9331 0 ECG0
+n04.dat 16 200/mV 12 0 0 -23136 0 ECG1