The format of a FORM string in GNAT is:
where letters may be in upper or lower case, and there are no spaces between values. The order of the entries is not important. Currently the following keywords defined.
TEXT_TRANSLATION=[YES|NO|TEXT|BINARY|U8TEXT|WTEXT|U16TEXT] SHARED=[YES|NO] WCEM=[n|h|u|s|e|8|b] ENCODING=[UTF8|8BITS]
The use of these parameters is described later in this section. If an unrecognized keyword appears in a form string, it is silently ignored and not considered invalid.
For OpenVMS additional FORM string keywords are available for use with RMS services. The syntax is:
The following RMS keywords and values are currently defined:
VMS RMS keys are silently ignored on non-VMS systems. On OpenVMS unimplented RMS keywords, values, or invalid syntax will raise Use_Error.