Factor 1 names a field or gives actual data (literals) on which an operation is done, or contains a RPG IV special word (for example, *LOCK) which provides extra information on how an operation is to be done. The entry must begin in position 12. The entries that are valid for factor 1 depend on the operation code specified in positions 26 through 35. For the specific entries for factor 1 for a particular operation code, see Chapter 22. Operation Codes. With some operation codes, two operands may be specified separated by a colon.