Changes

Use this template to convert a roman page number into a negative arabic number, where zero iz the roman zero is treated as -100000. Thus, the roman number is converted into arabic value, and the result is -100000 + value. For instance, if <code><nowiki>value=x</nowiki></code>, the template will return -99990. If <code><nowiki>value=iv</nowiki></code>, the template will return -99996. If an empty string is passed as a value, an empty string is returned. All non roman characters are ignored.