I am trying to understand how to use the <arg.. tag in my validator.
1. What is the significance of using a 'name' inside the arg tag ? 2. How to use it (should the value of the name attribute be same as the rules defined in the depends attribute) and when to use it ? 3. Can it be omitted or it's been made mandatory by the rules ? 4. How can I know what should be the <var-name> for a rule or can I give anything I want. (user defined) ?