At the Physical level are the purely mechanical factors needed to support specific languages—different character sets, multilingual keyboards, and storage codes. Generally, iSeries applications are insulated from direct consideration of these factors by the capabilities of the hardware and the operating system. For instance, device configuration takes care of the keyboard mapping, and various extended character sets are available for the different national alphabets.
It may simplify design if the restrictions of different keyboards are taken into account. For instance, avoid the use of characters which are present in English but which are not common to all character sets (‘ ‘, @, # ), because on some keyboards, they can only be keyed as hexadecimal values. There are also considerations to be taken into account if you need to input or display data input in one character set at a device that uses another national character set, and if you collate extended character sets.
For more information, see the discussion of the CHRID and ALTSEQ keywords in the OS/400 manuals.
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