This summary is not the rule. The rule text controls.
This rule is currently reserved, which means it has no content right now. West Virginia has not written specific requirements here for the magistrate courts.
If you're dealing with a case in magistrate court and need to know how discovery works (getting evidence and information from the other side) or how to request a bill of particulars (a more detailed explanation of the charges against you), you'll need to look at other rules or ask the court directly. Since this section is empty, the usual rules for discovery and bills of particulars may come from other parts of West Virginia law or from general practices used in the magistrate court system.
If you have a case going on, it's a good idea to ask the court clerk or a lawyer what specific rules apply to your situation. They can point you to the right place since this particular rule doesn't give any guidance.