Randomly positions the file pointer for FILEHANDLE, just like the fseek() call of stdio. FILEHANDLE may be an expression whose value gives the name of the filehandle. The values for WHENCE are 0 to set the file pointer to POSITION, 1 to set the it to current plus POSITION, and 2 to set it to EOF plus offset. You may use the values SEEK_SET, SEEK_CUR, and SEEK_END for this is using the POSIX module. Returns 1 upon success, 0 otherwise.