Recommended datatypes:

 http://www.aminet.net/package.php?package=util/dtype/ilbmdt44.lha

  http://www.aminet.net/package.php?package=util/dtype/vPNGdt.lha

http://www.aminet.net/package.php?package=util/dtype/ZGIFDT39.18.lha

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 5491    9664  56.8% -lh5- dc34 Apr 18  2002 PictureDatatype42/classes/datatypes/picture.datatype
[generic]                  240     410  58.5% -lh5- c130 Apr 12  2005 PictureDatatype42/picturedatatype42.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         2 files    5731   10074  56.9%            Apr 12  2005