Add some stuff about markdown comments.

journal/logbook.md

@@ -4,7 +4,7 @@
 
 I started this MOOC a few days ago (18/03) and this is my first day tackling
 any of the practical exercises.
-I've been using VCS for many years, mostly github and a bit of self-hosted git, 
+I've been using VCS for many years, mostly GitHub and a bit of self-hosted git, 
 and rarely collaboratively. 
 You *can* teach an old dog new tricks, and it's interesting to get some new 
 perspectives on otherwise familiar tools.
@@ -15,9 +15,17 @@ perspectives on otherwise familiar tools.
 - I'm looking forward to getting to the part about org-mode;
   - I've been meaning to cultivate a proper note-taking system/personal 
     knowledge-base for a couple of years, since I first became aware of 
-    Obsidian.
+    Obsidian;
 - I really didn't know that scholars were using using XML (well, TEI) to make
-  linguistic/historical/literary annotations, but, well, that makes sense.
+  linguistic/historical/literary annotations, but, well, that makes sense;
+- Markdown comments, containing delimited labels/tags — now, there's a
+  thought;
+  - Here follows a comment that looks `<!--- kind of like this --->` 
+    <!--- except Pandoc won't render it --->;
+    - [Apparently](https://stackoverflow.com/a/4829998) Pandoc prefers the 
+      triple-hyphen;
+    - I thought markdown comments had to be some awful thing like 
+      `[//] # (this is a comment)`.
 
 ## Interesting links