updated language file specification

lang/language_specification.txt

@@ -15,6 +15,7 @@ Attributes:
 	Link.Abs	- absolute URL e.g. http://cryptobox.org/trac
 	Link.Prot	- 'http' or 'https'
 	Link.Rel	- relative url (based on the cgi root)
+	Link.Attr[12].[name|value]	- arguments to be added to the link
 
 	The "Link" attributes are only necessary if the (warning) message can be resolved by
 	some action. Otherwise it is not necessary to define any "Link" attribute.
@@ -22,9 +23,10 @@ Attributes:
 	All values are optional, but you should follow these rules:
 		- at least one of "Title" and "Text" should be defined
 		- if there are "Link" attributes, then you should also define "Link.Text"
-		- "Link.Abs" can not be combined with "Link.Prot" or "Link.Rel"
+		- "Link.Abs" can not be combined with "Link.Prot", "Link.Rel" or "Link.Attr..."
 		- "Link.Rel" and "Link.Prot" may be used together
+	(see plugin/volume_format_fs/lang/en.hdf for a good example for links)
 	
 	Note for translators: you may just ignore all "Link" attributes except "Link.Text".
-	All other attributes are taken from the original language file (english).
+	All other attributes are taken from the original (english) language file.