diff --git a/Configuration.md b/Configuration.md
index 026fe8d..dead4c3 100644
--- a/Configuration.md
+++ b/Configuration.md
@@ -2,19 +2,32 @@ Smeagol reads a configuration file, whose content should be formatted as a cloju
 
 The default content is as follows:
 
-    {
-     :site-title            "Smeagol"       ;; overall title of the site, used in page headings
-     :default-locale        "en-GB"         ;; default language used for messages
-     :formatters            {"vega"         smeagol.formatting/process-vega
-                             "vis"          smeagol.formatting/process-vega
-                             "mermaid"      smeagol.formatting/process-mermaid
-                             "backticks"    smeagol.formatting/process-backticks}
-    }
+```
+{
+  :site-title           "Smeagol"       ;; overall title of the site, used in page headings
+  :default-locale       "en-GB"         ;; default language used for messages
+  :content-dir          "/usr/local/etc/content"
+                                        ;; where content is served from
+  :passwd               "/usr/local/etc/passwd"
+                                        ;; where the password file is stored
+  :log-level            :info           ;; the minimum logging level; one of
+                                        ;; :trace :debug :info :warn :error :fatal
+  :formatters           {"vega"         smeagol.formatting/process-vega
+                         "vis"          smeagol.formatting/process-vega
+                         "mermaid"      smeagol.formatting/process-mermaid
+                         "backticks"    smeagol.formatting/process-backticks}
+}
+```
 
-The three keys given above should be present. The values should be:
+The values should be:
 
-* **:site-title** The title for your wiki
-* **:default-locale** A string comprising a lower-case [ISO 639](https://en.wikipedia.org/wiki/ISO_639) code specifying a language, optionally followed by a hyphen and an upper-case [ISO 3166](https://en.wikipedia.org/wiki/ISO_3166) specifying a country.
-* **:formatters** A map of formatters used in [[Extensible Markup]], q.v.
+* `:content-dir` The directory in which your editable content is stored;
+* `:default-locale` A string comprising a lower-case [ISO 639](https://en.wikipedia.org/wiki/ISO_639) code specifying a language, optionally followed by a hyphen and an upper-case [ISO 3166](https://en.wikipedia.org/wiki/ISO_3166) specifying a country.
+* `:formatters` A map of formatters used in [[Extensible Markup]], q.v.
+* `:log-level` The minimum level of log messages to be logged; one of `:trace :debug :info :warn :error :fatal`
+* `:passwd` The path to your `passwd` file - see [[Security and authentication]];
+* `:site-title` The title for your wiki.
 
 The default file is at `resources/config.edn`; this default can be overridden by providing an environment variable, `SMEAGOL_CONFIG`, whose value is the full or relative pathname of a suitable file.
+
+Note that all the values in the configuration can be overridden with [[Environment Variables]].