Syntax Diagram. With a syntax diagram there is only one entry point and one exit point. Required items appear on the horizontal line the main path.
Variables are used for the parameters. Sentences are not simply linear strings of words but are phrases which are linked together in hierarchical. The tree diagrams below represent examples a and b.
Required items appear on the horizontal line the main path.
They represent a graphical alternative to backus naur form ebnf augmented backus naur form and other text based grammars as metalanguages. Certain conventions apply to the syntax diagrams that are used in ibm documentation. We start at the entry point and read from left to right. 2 definition of syntax syntax is the study of the rules governing the way words are combined to form sentences in a language.
