Anyone who is able to write using pen and ink can sign legal documents. However, it is important that you understand what you are signing. Most forms have an explanatory paragraph on the back which explains how to complete it. You should read through this material before completing the form. If you have questions about any part of the document, you should contact the person who drafted it to ensure that you are understanding it correctly. Some forms may include a spot where you can strike out your signature if you do not want to consent to something.