Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n15.hea
@@ -0,0 +1,3 @@
+n15 2 128 230400
+n15.dat 16 200/mV 12 0 -16 5926 0 ECG0
+n15.dat 16 200/mV 12 0 -66 469 0 ECG1