Minor cleanup

README.md

@@ -76,13 +76,15 @@ Note: The [Goudy Initalen](https://www.tug.org/FontCatalogue/goudyinitialen/) fo
 </details>
 
 Note: The extension given to `:file` does not matter, only the base name is used
-and a `.png` is produced.
+and a `.png` is produced. As such, extensions are completely optional (and
+discarded when provided).
 
 
 # Screenshot 3: Fine-grained Size Control
 
-You can get fine grained control of the size of the resulting PNG by using
-LaTeX's [picture](https://en.wikibooks.org/wiki/LaTeX/Picture) [environment](https://www.overleaf.com/learn/latex/picture_environment).
+Instead of using `:resolution` as in the previous screenshot, you can get fine
+grained control of the size of the resulting PNG by using LaTeX's [picture](https://en.wikibooks.org/wiki/LaTeX/Picture)
+[environment](https://www.overleaf.com/learn/latex/picture_environment).
 
 <div align="center">
 
@@ -113,9 +115,6 @@ LaTeX's [picture](https://en.wikibooks.org/wiki/LaTeX/Picture) [environment](htt
 
 # Screenshot 4: *Local* LaTeX Header Matter
 
-You can get fine grained control of the size of the resulting PNG by using
-LaTeX's [picture](https://en.wikibooks.org/wiki/LaTeX/Picture) [environment](https://www.overleaf.com/learn/latex/picture_environment).
-
 You can add arbitrary LaTeX header matter &#x2014;i.e., the stuff before LaTeX's
 `\begin{document}`&#x2014; by using having a line with just “ `% in` ” to separate the
 header from the main PNG body.

README.org

@@ -91,14 +91,16 @@ Note: The [[https://www.tug.org/FontCatalogue/goudyinitialen/][Goudy Initalen]]
 
 
 Note: The extension given to =:file= does not matter, only the base name is used
-and a =.png= is produced.
+and a =.png= is produced. As such, extensions are completely optional (and
+discarded when provided).
 * Screenshot 3: Fine-grained Size Control
   :PROPERTIES:
   :CUSTOM_ID: Screenshot-3-Fine-grained-Size-Control
   :END:
 
-You can get fine grained control of the size of the resulting PNG by using
-LaTeX's [[https://en.wikibooks.org/wiki/LaTeX/Picture][picture]] [[https://www.overleaf.com/learn/latex/picture_environment][environment]].
+Instead of using =:resolution= as in the previous screenshot, you can get fine
+grained control of the size of the resulting PNG by using LaTeX's [[https://en.wikibooks.org/wiki/LaTeX/Picture][picture]]
+[[https://www.overleaf.com/learn/latex/picture_environment][environment]].
 
 #+html: <div align="center">
 [[file:using-picture-enviornment_with_source.png]]
@@ -129,9 +131,6 @@ LaTeX's [[https://en.wikibooks.org/wiki/LaTeX/Picture][picture]] [[https://www.o
   :CUSTOM_ID: Screenshot-4-Local-LaTeX-Header-Matter
   :END:
 
-You can get fine grained control of the size of the resulting PNG by using
-LaTeX's [[https://en.wikibooks.org/wiki/LaTeX/Picture][picture]] [[https://www.overleaf.com/learn/latex/picture_environment][environment]].
-
 You can add arbitrary LaTeX header matter ---i.e., the stuff before LaTeX's
 =\begin{document}=--- by using having a line with just “ =% in= ” to separate the
 header from the main PNG body.