Switch to side-by-side view

--- a
+++ b/gait-in-neurodegenerative-disease-database-1.0.0/park11.hea
@@ -0,0 +1,3 @@
+park11 2 300 90000
+park11.let 212 3000 12 0 -13 11066 0 left-foot
+park11.rit 212 3000 12 0 892 12780 0 right-foot