diff --git a/Sc2086.md b/Sc2086.md
index 786fd75..831fd8c 100644
--- a/Sc2086.md
+++ b/Sc2086.md
@@ -9,7 +9,15 @@
 ### Rationale 
 The problematic code looks like "print the first argument". It's actually "Split the first argument by spaces, tabs and line feeds. Expand each of them as if it was a glob. Join all the resulting strings and filenames with spaces. Print the result."
 
-Quoting prevents word splitting and glob expansion, and prevents the script from breaking when input contains spaces, line feeds, glob characters and such.
+Quoting variables prevents word splitting and glob expansion, and prevents the script from breaking when input contains spaces, line feeds, glob characters and such.
+
+Strictly speaking, only expansions themselves need to be quoted, but for stylistic reasons, entire arguments with multiple variable and literal parts are often quoted as one:
+
+    $HOME/$dir/dist/bin/$file        # Unquoted (bad)
+    "$HOME"/"$dir"/dist/bin/"$file"  # Minimal quoting (good)
+    "$HOME/$dir/dist/bin/$file"      # Canonical quoting (good)
+
+When quoting composite arguments, make sure to exclude globs and brace expansions, which lose their special meaning in double quotes: `"$HOME/$dir/src/*.c"` will not expand, but `"$HOME/$dir/src"/*.c` will.
 
 Note that `$( )` starts a new context, and variables in it have to be quoted independently: