Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n31.hea
@@ -0,0 +1,3 @@
+n31 2 128 230400
+n31.dat 16 200/mV 12 0 -99 8380 0 ECG0
+n31.dat 16 200/mV 12 0 -33 26894 0 ECG1