subroutine prtmsk(mask,array,work,idm,ii,jj,offset,scale,title)
!
! --- Delete 'array' elements outside 'mask'. Then
! --- break 'array' into sections, each 'nchar' characters wide, for printing.
!
      implicit none
      integer    nchar
      parameter (nchar=120)
!cc   parameter (nchar= 76)
!cc   parameter (nchar= 80)
!cc   parameter (nchar=132)
!
      integer   idm,ii,jj
      integer   mask(idm,*)
      real      array(idm,*),work(idm,*)
      real      offset,scale
      character title*(*)
!
      integer        lp
      common/linepr/ lp
      save  /linepr/
!
      integer i,i1,i2,j,n,ncols
!
      real    cvmgp,cvmgz,a,b,c
      integer ic
      cvmgp(a,b,c)=a*(.5+sign(.5,c))+b*(.5-sign(.5,c))
      cvmgz(a,b,ic)=cvmgp(a,b,-1.*iabs(ic))
!
      ncols=nchar/4
      do n=1,ii/ncols+1
        i1=ncols*(n-1)+1
        i2=min0(ncols*n,ii)
        if (i1.gt.i2) exit
        write &
          (lp,'(/'' Sec.'',i2,'' (cols'',i4,'' -'',i4,'') -- '',a)') &
          n,i1,i2,title
!cc        if (i2.lt.i1+5) then
!cc        write (lp,'('' (Not printed. Too few columns. Save paper.)'')')
!cc        exit
!cc        end if
        do j=jj,1,-1
          do i=i1,i2
            work(i,j)=cvmgz(0.,array(i,j),mask(i,j))
          enddo
          do i=i1,i2
            work(i,j)=cvmgz(0.,(work(i,j)-offset)*scale,mask(i,j))
          enddo
          write (lp,'(32i4)')        j,(int(work(i,j)),i=i1,i2)
!cc       write (lp,'(i4,1x,75i1)')  j,(int(work(i,j)),i=i1,i2)
!cc       write (lp,'(i4,1x,120i1)') j,(int(work(i,j)),i=i1,i2)
        enddo
      enddo
      call flush(lp)
      return
      end