[求助] 求助，关于Fortran开头program+（tape)的用法

!Master plane
    program Bok1(input,output,tape10=input,tape12=output,tape2,tape4,tape6,tape8)
    dimension title(12)

    common/Contro/npoin,nelem,nnode,ndofn,ndime,nstre,ntype,ngaus,nprop,nmats,nvfix,nevab,&
                   icase,ncase,itemp,iprob,nprob
    common/Lgdata/coord(80,2),props(10,5),presc(40,2),asdis(160),eload(25,16),strin(4,225),&
                   nofix(40),ifpre(40,2),lnods(25,8),matno(25)
    common/Work/elcod(2,8),shape(8),deriv(2,8),dmatx(3,3),cartd(2,8),dbmat(3,16),bmatx(3,16),&
                 smatx(3,16,9),posgp(3),weigp(3),gpcod(2,9),neror(24)


!**********************************************************
!  program for the solution of plane
!   frameworks
!**********************************************************
!
!  this segment controls the calling,in order, of all subroutines
! 
    !call Openfile
    read(10,900) nprob
 900 format(i5)
    write(12,905) nprob
 905 format(1ho,5x,23htotal no. of problems =,i5)
    do 20 iprob=1,nprob
    rewind 2
    rewind 4
    rewind 6
    rewind 8
    read(10,910) title
 910 format(12a6)
    write(12,915) iprob,title
 915 format(/////,6x,12hproblem no. ,i3,10x,12a6)
!
!  call the subroutine which reads most of 
!  the problem data
! 
    call Input
!
!  next create the element stiffness file
!
    call Stifps
    do 10 icase=1,ncase
!
!  compute loads, after reading the relevant
!  extra data
!
    call Loadps
!
!  merge and solve the resulting equations
!  by the prontal solver
! 
    call Front
!
!  compute the stresses in all the elements
!
    call Streps
 10 continue
 20 continue
    stop
  end