Transfers control within a program unit.  Depending upon the value
  of an expression, control is transferred either to the same
  statement every time GO TO is executed or to one of a set of
  statements.

1  –  Unconditional

  Transfers control unconditionally to the same statement every time
  the GO TO is executed.  Statement format:

     GO TO s

     s  Is the label of an executable statement that is
        in the same program unit as the GO TO statement.

2  –  Computed

  Transfers control to a statement based upon the value of an
  expression within the statement.  This is an obsolescent feature in
  Fortrsn 95.  Statement format:

     GO TO (slist)[,]e

     slist  Is a list of one or more labels of executable
            statements separated by commas. The list of labels
            is called the transfer list.

     e      Is an integer arithmetic expression in the range
            1 to n (where "n" is the number of statement labels
            in the transfer list).

  If the value of "e" is less than one or greater than the number of
  labels in the transfer list, control is transferred to the first
  executable statement after the computed GO TO.

                                 NOTE

          This  statement  is  obsolescent  in  Fortran   95.
          HP  Fortran  flags  obsolescent  features,  but
          fully supports them.

3  –  Assigned

  Transfers control to a statement label that is represented by a
  variable.  An ASSIGN statement must establish a relationship
  between the variable and the specified statement label.  Statement
  format:

     GO TO v[[,](slist)]

     v      Is an integer variable whose value was set by a
            preceding ASSIGN statement in the same program unit.

     slist  Is a list of one or more labels of executable
            statements separated by commas.

  This feature has been deleted in Fortran 95; it was an obsolescent
  feature in Fortran 90.  VSI Fortran fully supports features
  deleted in Fortran 95.