Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/p15.hea
@@ -0,0 +1,3 @@
+p15 2 128 230400
+p15.dat 16 200/mV 12 0 -493 -1286 0 ECG0
+p15.dat 16 200/mV 12 0 -150 31354 0 ECG1