Just toying with the idea of adding a parallel text feature to textivate.
I thought I'd try it first with the parallel (L1) text as an image.
Here's my text in English:
The French version of the text is in this textivate resource: https://www.textivate.com/menu-bijjn1
(Click on the image icon -- the butterfly -- to see the parallel text as an image.)
Here it is with the text (image) visible.
Here's an embedded activity. (You need to click the picture icon to open the activity in a separate screen along with the English text.)