Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n15c.hea
@@ -0,0 +1,3 @@
+n15c 2 128 38400
+n15c.dat 16 200/mV 12 0 -16 -27964 0 ECG0
+n15c.dat 16 200/mV 12 0 -9 20849 0 ECG1