diff --git a/UseCaseComparisons.md b/UseCaseComparisons.md
index 015cef19..6fb28257 100644
--- a/UseCaseComparisons.md
+++ b/UseCaseComparisons.md
@@ -4,27 +4,33 @@ This document is indended to address the use cases addressed by both the `pictur
Assuming three image “breakpoints” based on maximum widths, using pixel-based values: 400px, 600px, and 800px. The smallest image source has been designated as fallback content.
**`picture` Element*
-```
+```
+
-```
+
+```
**Extended `srcset`**
-``````
+```
+
+```
### Using min-width ###
Assuming three image “breakpoints” intended to remain in sync with a media-query-based CSS layout making use of `min-width` media queries.
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
@@ -34,19 +40,23 @@ N/A
Assuming three image “breakpoints” intended to remain in sync with a media-query-based layout specced in `em` units.
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
Note: the `em` values above could be manually converted to `px` by the author to ensure that the image breakpoints are within a few pixels of the `em`-based layout media queries, resulting in:
-``````
+```
+
+```
While the `em`-based CSS layout will be reevaulated based on user zoom in all modern browsers (see http://blog.cloudfour.com/the-ems-have-it-proportional-media-queries-ftw/ for a description and functional example) and we can assume the same for the `em`-based image breakpoints, the `px`-based image breakpoints will fall out of sync with the layout when the user zooms in or out.
@@ -54,11 +64,13 @@ While the `em`-based CSS layout will be reevaulated based on user zoom in all mo
[ … ]
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
@@ -68,40 +80,50 @@ N/A
The two proposals are functionally identical in terms of dealing with display density when independent of the “Viewport Sizes” use case:
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
-``````
+```
+
+```
## Display density in conjunction with viewport sizing ##
Assuming three image “breakpoints” based on maximum widths, using pixel-based values: 400px, 600px, and 800px. The smallest standard resolution image source has been designated as fallback content.
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
-``````
+```
+
+```
## Print sources
Assuming two image sources indended for display on screen depending on window size, each with a standard and high-definition source, and a single image source intended for printing.
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
@@ -110,11 +132,13 @@ N/A
This is based on the high-contrast mode and ambient light media queries currently being proposed in the CSS WG.
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
@@ -129,11 +153,13 @@ N/A
## Potential for addressing new image formats
**`picture` Element**
-```
+```
+
-```
+
+```
**Extended `srcset`**
N/A
-
-