http://www.berklix.org/~jhs/src/bsd/fixes/freebsd/ports/jhs/graphics/tiff/files/patch-ja-tiffsplit.1.diff
For /usr/ports/graphics/tiff/work/tiff-4.2.0/man/tiffsplit.1

*** man/tiffsplit.1.orig	Sat Dec  2 16:21:49 2017
--- man/tiffsplit.1	Thu Jan  7 14:49:14 2021
***************
*** 22,28 ****
  .\" OF THIS SOFTWARE.
  .\"
  .if n .po 0
! .TH TIFFSPLIT 1 "September 20, 2005" "libtiff"
  .SH NAME
  tiffsplit \- split a multi-image
  .SM TIFF
--- 22,28 ----
  .\" OF THIS SOFTWARE.
  .\"
  .if n .po 0
! .TH TIFFSPLIT 1 "September 20, 2005 +jhs@" "libtiff"
  .SH NAME
  tiffsplit \- split a multi-image
  .SM TIFF
***************
*** 47,56 ****
  suffix in the range [\fIaaa\fP-\fIzzz\fP], the suffix
  .I .tif 
  (e.g. 
! .IR xaaa.tif ,
! .IR xaab.tif ,
  .IR ... ,
! .IR xzzz.tif ).
  If a prefix is not specified on the command line,
  the default prefix of
  .I x
--- 47,59 ----
  suffix in the range [\fIaaa\fP-\fIzzz\fP], the suffix
  .I .tif 
  (e.g. 
! .\" .IR xaaa.tif ,
! .IR x000.tif ,
! .\" .IR xaab.tif ,
! .IR x001.tif ,
  .IR ... ,
! .\" .IR xzzz.tif ).
! .IR x999.tif ).
  If a prefix is not specified on the command line,
  the default prefix of
  .I x