Date   : Tue, 02 Apr 1985 15:48:14-PST
From   : Christopher Ho <Chris%ECLD@usc-ecl.ARPA>
Subject: apple diskettes

Apple diskettes use a SOFT sectored scheme, but the data is encoded
using a GCR technique instead of the more popular MFM method.  Most
systems (if not all) would not be able to read them.