|hex||The name of a catalogued MVBasic program ($hex), commonly represented by a four-digit hexadecimal number. Letters can be written in uppercase or lowercase, and leading zeros can be omitted.|
The U PROC command exits PROC execution and branches execution to a catalogued MVBasic program. This command is commonly used to perform exception handling. Commonly, the space between the command name and hex is omitted. For example, U31AD.