diff --git a/99. Chapter Template/Markdown Usage.md b/99. Chapter Template/Markdown Usage.md
index 37e4a78..34051c7 100644
--- a/99. Chapter Template/Markdown Usage.md	
+++ b/99. Chapter Template/Markdown Usage.md	
@@ -58,10 +58,6 @@ e.g.:
    |                              etc.                             |
 ```
 
-The
-[*mermaid* tool](https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/creating-diagrams)
-can be used for flow charts and state diagrams, e.g.:
-
 More complex diagrams may be included using SVG generated by a
 separate drawing tool such as [*mermaid*](https://mermaid.live)
 or [*dia*](http://dia-installer.de/),
@@ -76,7 +72,7 @@ flowchart LR
 ```
 ````
 
-Embedded in markdown as an SVG file:
+Embedded in markdown as an SVG file generated by [*mermaid.live*](https://mermaid.live):
 
 ```
 <img src="./example1.svg" width=250 alt="Start here, end here">
@@ -96,7 +92,7 @@ Example generated with *dia*:
 
 Please add alternate text to help people with visual difficulties.
 
-*Note:* Direct use of mermaid in markdown source is not recommended,
+*Note:* Direct use of *mermaid* in markdown source is not recommended,
 as it causes difficulty when generating a PDF version of book6.
 
 Existing diagrams in PNG or JPG format can be inserted in the same way,