OPEN Statement - Format 2 - Indexed and Relative
.-----------------------------.
| .-------------. |
V V | |
>>-OPEN----+-INPUT----file-name-1-+--+-+-----------------------><
| .-------------. |
| V | |
+-OUTPUT----file-name-2-+-+
| .-------------. |
| V | |
'-I-O----file-name-3-+----'
For relative files only, the OPEN statement is not allowed for logical file members:
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