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    Syntax - PATCH pathname, address, data1, data2

    (External) Lets you make minor modifications to a disk file.

            pathname is the file you want to change.

            address is the byte number starting (hex) address of the data
                    string to change.

            data1   is the hex data value to change.

            data2   is the hex data value to replace data1.

    Example:
            patch ft.com, 16a3, 000a106c2f, 010b116d30