go: godoc

go.md

@@ -12,10 +12,24 @@ It's easy to understand and teaches you all you need to know.
 # Making a web api
 
 > We need to memorize the `Handler` interface.
-> ```go
+>
 >     type Handler interface {
 >         ServerHTTP(ResponseWriter, *Request)
 >     }
-> ```
 
 
+# `godoc` [^golang-godoc]
+
+> Godoc parses Go source code - including comments - and produces documentation as HTML or plain
+> text.
+> The end result is documentation tightly coupled with the code it documents.
+> For example, through godoc's web interface [which is at <http://localhost:6060> by default] you can
+> navigate from a function's documentation to its implementation with one click.
+
+## Installing godoc // `command not found: godoc`
+
+```bash
+go get golang.org/x/tools/cmd/godoc
+```
+
+[^golang-godoc]: Andrew Gerrand, 31 March 2011 --- <https://blog.golang.org/godoc>