diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines
index 4c756be517..b5a85d0cd4 100644
--- a/Documentation/CodingGuidelines
+++ b/Documentation/CodingGuidelines
@@ -650,8 +650,8 @@ Writing Documentation:
    (One or more of <file>.)
 
  Optional parts are enclosed in square brackets:
-   [<extra>]
-   (Zero or one <extra>.)
+   [<file>...]
+   (Zero or more of <file>.)
 
    --exec-path[=<path>]
    (Option with an optional argument.  Note that the "=" is inside the
@@ -665,6 +665,16 @@ Writing Documentation:
    [-q | --quiet]
    [--utf8 | --no-utf8]
 
+ Use spacing around "|" token(s), but not immediately after opening or
+ before closing a [] or () pair:
+   Do: [-q | --quiet]
+   Don't: [-q|--quiet]
+
+ Don't use spacing around "|" tokens when they're used to seperate the
+ alternate arguments of an option:
+    Do: --track[=(direct|inherit)]
+    Don't: --track[=(direct | inherit)]
+
  Parentheses are used for grouping:
    [(<rev> | <range>)...]
    (Any number of either <rev> or <range>.  Parens are needed to make