The document defines and discusses different types of easements and licenses related to land ownership. It covers:
1) An easement is a right to use another's land for a specific purpose. Easements can be continuous or discontinuous, apparent or non-apparent.
2) An easement can be extinguished, or ended, in several ways, including by release or revocation by the landowner, expiration of time limits, or non-use for 20 years.
3) A license is permission to do something that would otherwise be unlawful, but does not transfer ownership rights. Licenses can be revoked by the grantor unless work was done or expenses incurred in reliance on the license.