Hi,
PACK_KEYS, CHECKSUM, DELAY_KEY_WRITE
can also be set on InnoDB, BDB aso.
whether it has an effect on this engines or not, should phpMyAdmin display this properties as well, possible with a note that this settings have no effect?
f.e. if you created MyISAM tables with this options enabled (long years ago), converted them to InnoDB and now export and import it onto a server without InnoDB you have the above options enabled again whether the Operator wanted it or not.
If this option can be set phpMyAdmin should display it, regardless if it has an effect or not.