T

 Tn (Tab to Position n)

 On input, starts the next read operation at the character position
 (within the record) indicated by position n.  For example, if an
 input statement reads a record containing:

    ABC   XYZ

 and this record is under the control of the FORMAT statement:

    10 FORMAT (T7,A3,T1,A3)

 On execution, the input statement would first read the characters
 XYZ and then read the characters ABC.

 On output, starts the next write operation at the character
 position n in the external record.

 The position specified must be an integer in the range 1 through
 the size of the record.