diff --git a/SC1117.md b/SC1117.md
index 16dbdf0..6071cd3 100644
--- a/SC1117.md
+++ b/SC1117.md
@@ -28,7 +28,11 @@ Instead of relying on this implicit fallback, you should escape the backslash ex
 
 ### Exceptions:
 
-None. This is a stylistic issue which can be [[ignore]]d. But can you name the 5 characters that *are* special when escaped in double quotes?
+None. This is a stylistic issue which can be [[ignored]]. But can you name the 5 characters that *are* special when escaped in double quotes? 
+
+They are $, `, ", \\, or newline. More infos are available in the [bash manual].
+
+[bash manual]: https://www.gnu.org/software/bash/manual/html_node/Double-Quotes.html
 
 ### Retired: