MySQL MyIASM files what are they for MYI,MYD,frm

One would hope to never need to know this, but an unfortunate soul who is trying to recover MySQL MyISAM tables may need this.


http://forge.mysql.com/wiki/MySQL_Internals_MyISAM

A quote from the above:
'MySQL creates files named Table1.MYD ("MySQL Data"), Table1.MYI ("MySQL Index"), and Table1.frm ("Format")'