A more thorough explanation:

Falsa demonstratio (fal-sə or fawl-sə dem-ən-stray-shee-oh) is a term used in Roman law to refer to a false designation or an erroneous description of a person or thing in a legal document.

For example, if a will mistakenly identifies a beneficiary by the wrong name, this would be considered a falsa demonstratio. However, a simple error in description, grammar, or spelling will not necessarily void the entire document or even a single provision within it.

It is important to ensure that legal documents are accurate and free from errors to avoid any confusion or disputes in the future.