Data Interfaces

Opening a File - AT POSITION
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OPEN DATASET
AT POSITION
MESSAGE
The following additions exist for the OPEN statement:
AT POSITION
With this addition, you can specify a file position (in bytes) from the beginning of the file. The next read
or write operation then takes place at this point. You cannot position the cursor before the beginning of
the file.
Although this addition can be used together with IN TEXT MODE, this has little sense as the physical
format of a text file is largely dependent on the operating system.
MESSAGE
If an error occurs when opening the file, the associated operating system message is stored in the field
.
For information on other additions, refer to the online documenation.