Several Data Dictionary Definitions are used to describe binary data.
Their values are retrieved, when binary data is opened by an
application program. The "data=" Definition defines
where the binary filename is located. The "format="
Definition defines the binary format name. And the
"fmt:format=" Definitions are used to
define the actual binary format structure -- whether it's on disk or
in an internal format where a specific host-dependent application
code can manipulate the data fields.
By default, output binary data filenames are the same name as
it's Dictionary suffixed by "_@" (eg. line7_@)
or by the environment, DATA_SUFFIX (See
environment). The binary file is also
created by default in the current working or by the
environment, DATA_PATH. This allows the binary data
to be diverted to a special file system that may provide special
capacity, speed, or backup support. This provides for simpler
management of the smaller dictionaries in working project directories.