The convert/and command converts a given list, set, or expression to an `and` form. Given expr as a list , convert/and converts the list into the form . If the given list or set is empty, true is returned.

The convert/or command converts a given list or set to an `or` form. Given expr as a list , convert/or converts the list into the form . If the given list or set is empty, false is returned.

The convert/xor command converts a given list or set to an `xor` form. Given expr as a list , convert/xor converts the list into the form . If the given list or set is empty, true is returned.