anaphylactic shock - a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure.
Every SWP and SW document begins with a document shell. As you choose a shell to open a new document, keep your typesetting needs in mind, especially if you expect to create a complex document. Your installation includes an extensive collection of general purpose and specialized shells for documents of various types:
Windows 1.0 is not a complete operating system; rather, it extends MS-DOS. The shell of Windows 1.0 is a program known as the MS-DOS Executive. Components included Calculator, Calendar, Cardfile, Clipboard viewer, Clock, Control Panel, Notepad, Paint, Reversi, Terminal and Write.