Switch to side-by-side view

--- a
+++ b/mit-bih-malignant-ventricular-ectopy-database-1.0.0/420.hea
@@ -0,0 +1,3 @@
+420 2 250 525000
+420.dat 212 200 12 0 -8 -14368 0 ECG
+420.dat 212 200 12 0 -60 -6019 0 ECG