While the bill is the most common type of legislation, three types of resolutions, which follow somewhat different processes, also are used by the legislature. Resolutions are used to handle specific activities of the legislature and are commonly used to propose amendments to the Texas Constitution; take care of housekeeping functions; convey congratulations or condolences to individuals or groups in the state; express legislative intent; express an opinion or sentiment on matters of public interest; give direction to a state agency or official; or call on certain governmental agencies, offices, or units such as the U.S. Congress to take a specific course of action. They are legislative instruments that must be introduced, assigned numbers, and acted on by the legislature. Except for concurrent resolutions, they are not sent to the governor for signing, and the governor cannot veto them. The three types of legislative resolutions are joint resolutions, concurrent resolutions, and simple resolutions.