Minor wording tweaks.

CONTROLS.rst

@@ -60,4 +60,4 @@ In submission mode you can view the self text for a submission and browse commen
 :``l`` or ``►``: Open the selected comment in a new window
 :``o`` or ``ENTER``: Open the comment permalink with your web browser
 :``SPACE``: Fold the selected comment, or load additional comments
-:``b``: Displays URLs with urlview
+:``b``: Display URLs with urlview

README.rst

@@ -140,30 +140,29 @@ If you prefer the complete terminal experience, set ``$BROWSER`` to a console-ba
 Url Viewer
 ----------
 
-You can open comment links using a url extraction binary.
-The ``$RTV_URLVIEWER`` environment variable can be used to set the url viewer.
+You can open links displayed inside of comments by taking advantage of a url extraction program.
+Use ``$RTV_URLVIEWER`` to specify a custom url viewer.
 
 .. code-block:: bash
 
     $ export RTV_URLVIEWER=urlview
 
-The default program is ``urlview``, but most systems do not come with it installed by default.
+`urlview <https://github.com/sigpipe/urlview>`_ and `urlscan <https://github.com/firecat53/urlscan>`_ are known to be compatible, but any program that accepts text via a stdin pipe will do.
+These applications do not come pre-installed on most systems.
+
+**Ubuntu**
 
-Ubuntu
-------
 .. code-block:: bash
 
     $ sudo apt-get install urlview
 
-Mac with Homebrew
------------------
+**Mac with Homebrew**
+
 .. code-block:: bash
 
     $ brew install urlview
 
 
-`urlview <https://github.com/sigpipe/urlview>`_, `urlscan <https://github.com/firecat53/urlscan>`_, are known to be compatible, but any program that accepts text via a stdin pipe will do
-
 ===
 FAQ
 ===