The POSITION specifier indicates the position of a file connected for sequential access. It takes the following form:
|'ASIS'||Indicates the file position is unchanged if the file exists and is already connected. The position is unspecified if the file exists but is not connected.|
|'REWIND'||Indicates the file is positioned at its initial point.|
|'APPEND'||Indicates the file is positioned at its terminal point (or before its end-of-file record, if any).|
The default is 'ASIS'.
A new file (whether specified as new explicitly or by default) is always positioned at its initial point.
For More Information:
For details on record position, advancement, and transfer, see your user manual.