Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n31c.hea
@@ -0,0 +1,3 @@
+n31c 2 128 38400
+n31c.dat 16 200/mV 12 0 -5 -14758 0 ECG0
+n31c.dat 16 200/mV 12 0 -17 -1656 0 ECG1