TAL Reference Summary

Reference Summary
096256 Tandem Computers Incorporated 1
Notation Conventions This reference summary presents syntax in railroad diagrams. To use a railroad
diagram, follow the direction of the arrows and specify syntactic items as indicated by
the diagram and the term definitions that follow the diagram. Here is an example of a
railroad diagram:
file-nameSOURCE
define-name (
)
section-name
,
The parts of the diagram have these meanings:
SOURCE
Specify the keyword as shown, using uppercase or lowercase.
,
Specify the symbol or punctuation as shown.
section-name
Supply the information indicated, using uppercase or lowercase.
Branching Branching lines indicate a choice, such as:
item1
item2
Required choice. Specify one of the items.
item1
item2
Optional choice. Specify one or none of the items.
,
item
Repeatable item. Specify one or more of the items.