New section heading for command-line usage

README.md

diff --git a/README.md b/README.md
index b43b0dc..2decdf8 100644
--- a/README.md
+++ b/README.md
@@ -98,9 +98,16 @@
 Shorthand letters can be used with single dashes on the command line.
 Boolean shorthand flags can be combined with other shorthand flags.
 
-Command line flag syntax:
+The default set of command-line flags is controlled by
+top-level functions.  The FlagSet type allows one to define
+independent sets of flags, such as to implement subcommands
+in a command-line interface. The methods of FlagSet are
+analogous to the top-level functions for the command-line
+flag set.
 
-``` go
+## Command line flag syntax
+
+```
 --flag    // boolean flags only
 --flag=x
 --flag x  // non-boolean flags only
@@ -109,7 +116,7 @@
 The last form is not permitted for boolean flags because the
 meaning of the command
 
-``` go
+```
 cmd --flag *
 ```
 
@@ -120,7 +127,7 @@
 different than a double dash. Single dashes signify a series of shorthand
 letters for flags. All but the last shorthand letter must be boolean flags.
 
-``` go
+```
 -f          // f must be boolean
 -abc        // all flags must be boolean
 -abcn=1234
@@ -137,13 +144,6 @@
 Boolean flags may be 1, 0, t, f, true, false, TRUE, FALSE, True, False.
 Duration flags accept any input valid for time.ParseDuration.
 
-The default set of command-line flags is controlled by
-top-level functions.  The FlagSet type allows one to define
-independent sets of flags, such as to implement subcommands
-in a command-line interface. The methods of FlagSet are
-analogous to the top-level functions for the command-line
-flag set.
-
 ## More info
 
 You can get a full reference of the pflag package through go's standard