Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n30.hea
@@ -0,0 +1,3 @@
+n30 2 128 230400
+n30.dat 16 200/mV 12 0 -35 11500 0 ECG0
+n30.dat 16 200/mV 12 0 -23 14734 0 ECG1