Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n18c.hea
@@ -0,0 +1,3 @@
+n18c 2 128 38400
+n18c.dat 16 200/mV 12 0 4 19583 0 ECG0
+n18c.dat 16 200/mV 12 0 2 21894 0 ECG1