Switch to side-by-side view

--- a
+++ b/ansiaami-ec13-test-waveforms-1.0.0/aami3a.hea
@@ -0,0 +1,3 @@
+aami3a 1 720 43081
+aami3a.dat 16 130 12 2048 2072 -11941 0 ECG
+# ANSI/AAMI EC13-1992, Figure 3a.