This package includes"libpng"

-rw-r--r---     root     root      91822 Jul 24 09:48 /usr/X11R6/include/png.h
-rw-r--r---     root     root      18575 Jul 24 09:48 /usr/X11R6/include/pngconf.h
-rw-r--r---     root     root     121282 Jul 24 09:48 /usr/X11R6/lib/libpng.a
lrwxrwxrwx-     root     root         15 Jul 24 09:48 /usr/X11R6/lib/libpng.so -> libpng.so.2.1.0
-rwxr-xr-x-     root     root     113650 Jul 24 09:48 /usr/X11R6/lib/libpng.so.2.1.0
-rwxr-xr-x-     root     root      29424 Jul 24 09:48 /usr/X11R6/man/man3/libpng.3.gz
-rwxr-xr-x-     root     root       1859 Jul 24 09:48 /usr/X11R6/man/man3/libpngpf.3.gz
-rwxr-xr-x-     root     root        871 Jul 24 09:48 /usr/X11R6/man/man5/png.5.gz
drwxr-xr-x-     root     root       1024 Jul 24 09:48 /usr/doc/packages/libpng
-rw-r--r---     root     root      15275 Mar 15 23:54 /usr/doc/packages/libpng/CHANGES
-rw-r--r---     root     root       9721 Mar 16 01:20 /usr/doc/packages/libpng/README
-rw-r--r---     root     root        833 Mar 16 01:20 /usr/doc/packages/libpng/TODO
-rw-r--r---     root     root      81831 Mar 16 01:20 /usr/doc/packages/libpng/libpng.txt