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CALL FSeek(Unit, Offset, Whence, ErrLab)
Unit: INTEGER
; scalar; INTENT(IN).
Offset: INTEGER
; scalar; INTENT(IN).
Whence: INTEGER
; scalar; INTENT(IN).
ErrLab: `*label', where label is the label of an executable statement; OPTIONAL.
Intrinsic groups: unix
.
Description:
Attempts to move Fortran unit Unit to the specified Offset: absolute offset if Whence=0; relative to the current offset if Whence=1; relative to the end of the file if Whence=2. It branches to label ErrLab if Unit is not open or if the call otherwise fails.