Syntax files are supplied with the basic configuration of BS2000 and with the various software products. These contain:
information on the syntax of all and of the program statements
information as to how these commands are implemented in BS2000, e.g.
the names of the system entries via which command execution is effected
the specifications for passing parameters to the executing system modules
general and command-specific specifications for guided dialogs
explanatory texts for the commands or statements and their operands (“help texts”)
privileges required to access domains, commands, statements, operands and operand values
The syntax files are merged, as required, to form group or system syntax files and are assigned accordingly in the system (see the “SDF Management” manual [2 (Related publications)]). When SDF processes a command that has been entered, it retrieves the information needed to do so from the activated syntax files (see section “File hierarchy”).
Figure 1: Principle of operation of SDF