cmdline/differences.md: split into a separate section from cmdline.md

Closes #306

SUMMARY.md

@@ -45,6 +45,7 @@
     * [TLS libraries](build/tls.md)
       * [BoringSSL](build/boringssl.md)
 * [Command line basics](cmdline.md)
+    * [Differences](cmdline/differences.md)
     * [Command line options](cmdline/options.md)
     * [Options depend on version](cmdline/versions.md)
     * [URLs](cmdline/urls.md)

cmdline.md

@@ -3,45 +3,6 @@
 curl started out as a command-line tool and it has been invoked from shell
 prompts and from within scripts by countless users over the years.
 
-## Binaries and different platforms
-
-The command-line tool `curl` is a *binary executable file*. The curl project
-does not by itself distribute or provide binaries. Binary files are highly
-system specific and oftentimes also bound to specific system versions.
-
-Different curl versions, built by different people on different platforms
-using different third party libraries with different built-time options make
-the tool to offer different features in different places. In addition, curl is
-continuously developed, so newer versions of the tool are likely to have more
-and better features than the older ones.
-
-## Command lines, quotes and aliases
-
-There are many different command lines, shells and prompts in which curl can
-be used. They all come with their own sets of limitations, rules and
-guidelines to follow. The curl tool is designed to work with any of them
-without causing troubles but there may be times when your specific command
-line system does not match what others use or what is otherwise documented.
-
-One way that command-line systems differ, for example, is how you can put
-quotes around arguments such as to embed spaces or special symbols. In
-most Unix-like shells you use double quotes (") and single quotes (')
-depending if you want to allow variable expansions or not within the quoted
-string, but on Windows there is no support for the single quote version.
-
-In some environments, like PowerShell on Windows, the authors of the command
-line system decided they know better and "help" the user to use another tool
-instead of curl when `curl` is typed, by providing an alias that takes
-precedence when a command line is executed. In order to use curl properly with
-PowerShell, you need to type in its full name including the extension:
-"curl.exe".
-
-Different command-line environments will also have different maximum command
-line lengths and force the users to limit how large amount of data that can be
-put into a single line. curl adapts to this by offering a way to provide
-command-line options through a file—or from stdin—using the [-K
-option](cmdline/configfile.md).
-
 ## Garbage in gives garbage out
 
 curl has little will of its own. It tries to please you and your wishes to a

cmdline/differences.md

@@ -0,0 +1,40 @@
+# Differences
+
+## Binaries and different platforms
+
+The command-line tool `curl` is a *binary executable file*. The curl project
+does not by itself distribute or provide binaries. Binary files are highly
+system specific and oftentimes also bound to specific system versions.
+
+Different curl versions, built by different people on different platforms
+using different third party libraries with different built-time options makes
+the tool offer different features in different places. In addition, curl is
+continuously developed, so newer versions of the tool are likely to have more
+and better features than the older ones.
+
+## Command lines, quotes and aliases
+
+There are many different command lines, shells and prompts in which curl can
+be used. They all come with their own sets of limitations, rules and
+guidelines to follow. The curl tool is designed to work with any of them
+without causing troubles but there may be times when your specific command
+line system does not match what others use or what is otherwise documented.
+
+One way that command-line systems differ, for example, is how you can put
+quotes around arguments such as to embed spaces or special symbols. In
+most Unix-like shells you use double quotes (") and single quotes (')
+depending if you want to allow variable expansions or not within the quoted
+string, but on Windows there is no support for the single quote version.
+
+In some environments, like PowerShell on Windows, the authors of the command
+line system decided they know better and "help" the user to use another tool
+instead of curl when `curl` is typed, by providing an alias that takes
+precedence when a command line is executed. In order to use curl properly with
+PowerShell, you need to type in its full name including the extension:
+"curl.exe".
+
+Different command-line environments will also have different maximum command
+line lengths and force the users to limit how large amount of data that can be
+put into a single line. curl adapts to this by offering a way to provide
+command-line options through a file or stdin using the [-K
+option](configfile.md).