Switch to side-by-side view

--- a
+++ b/mit-bih-noise-stress-test-database-1.0.0/old/oldem.hea
@@ -0,0 +1,3 @@
+oldem 2 360 650000
+oldem.dat 16 0 12 0 45 8714 0 EM noise, signal 0
+oldem.dat 16 0 12 0 -47 28674 0 EM noise, signal 1