[tutorial 028] Description of Jinja calculation

By default, the Jinja calculation is generic in documentation. We can add a useful description.

We add a new variable "version" only accessible in "Socks" family.

firefox/20-manual.yml

@@ -3,17 +3,20 @@ manual:
 
   use_for_https: true  # Also use this proxy for HTTPS
 
-  https_proxy:
+  "{{ suffix }}_proxy":
-    description: HTTPS Proxy
+    description: "{{ suffix }} Proxy"
+    dynamic:
+      - HTTPS
+      - SOCKS
     hidden:
       variable: _.use_for_https
 
     address:
-      description: HTTPS address
+      description: "{{ suffix }} address"
       default:
         variable: __.http_proxy.address
 
     port:
-      description: HTTPS Port
+      description: "{{ suffix }} port"
       default:
         variable: __.http_proxy.port