Switch to side-by-side view

--- a
+++ b/mit-bih-arrhythmia-database-1.0.0/221.hea
@@ -0,0 +1,6 @@
+221 2 360 650000
+221.dat 212 200 11 1024 967 -5769 0 MLII
+221.dat 212 200 11 1024 1034 -20025 0 V1
+# 83 M 1268 694 x1
+# Hydrochlorthiazide, Lasix
+# The PVCs are multiform, but one form is much more common than the others.