A more thorough explanation:

Definition: The burden of pleading, also known as the burden of allegation, is a party's responsibility to present a matter in their lawsuit in order for it to be heard. This means that a party must include all relevant information in their initial pleadings, or they may not be able to argue that matter later in the case.

Example: If a plaintiff is suing a defendant for breach of contract, the plaintiff has the burden of pleading all of the elements of their claim, such as the existence of a valid contract, the defendant's breach of that contract, and the damages suffered by the plaintiff as a result. If the plaintiff fails to include any of these elements in their initial complaint, they may not be able to argue those points later in the case.

Another example: In a personal injury case, the plaintiff has the burden of pleading all of the elements of their claim, such as the defendant's negligence, the plaintiff's injuries, and the damages suffered. If the plaintiff fails to include any of these elements in their initial complaint, they may not be able to argue those points later in the case.

These examples illustrate how the burden of pleading requires a party to be thorough and complete in their initial pleadings, or risk losing the ability to argue certain points later in the case.