This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
In general, no. Binary II is an Apple-only device which, today, is largely unnecessary and can cause problems. Virtually the only valid use for Binary II is to retain filetype information for .SEA self-extracting archives. (An .SEA file with a Binary II header is a .BSE file.) The only file which significantly benefits form a Binary II header is a self-extracting archive of GS-ShrinkIt. By: Adalbert Goertz
 
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