Switch to side-by-side view

--- a
+++ b/paf-prediction-challenge-database-1.0.0/n25.hea
@@ -0,0 +1,3 @@
+n25 2 128 230400
+n25.dat 16 200/mV 12 0 -69 14192 0 ECG0
+n25.dat 16 200/mV 12 0 -25 -23030 0 ECG1