Replication Guide and Reference

How to read syntax diagrams

The following rules apply to the syntax diagrams used in this book:

• Read the syntax diagrams from left to right, from top to bottom, following the path of the line.

  The >>--- symbol indicates the beginning of a statement.

  The ---> symbol indicates that the statement syntax is continued on the next line.

  The >--- symbol indicates that a statement is continued from the previous line.

  The --->< symbol indicates the end of a statement.

  Diagrams of syntactical units other than complete statements start with the >--- symbol and end with the ---> symbol.

• Keywords, their allowable synonyms, and reserved parameters, are either shown in uppercase or lowercase, depending on the operating system. These items must be entered exactly as shown. Variables appear in lowercase italics (for example, column-name). They represent user-defined parameters or suboptions.

  When entering commands, separate the parameters and keywords by at least one blank if there is no intervening punctuation.

• Enter punctuation marks (slashes, commas, periods, parentheses, quotation marks, equal signs, and so on) and numbers exactly as given.

• Footnotes are shown by a number in parentheses, for example, (1).

• Required items appear on the horizontal line (the main path).

  >>-required_item-----------------------------------------------><
   
  

• Optional items appear below the main path.

  >>-required_item--+---------------+----------------------------><
                    '-optional_item-'
   
  

• If you can choose from two or more items, they appear vertically, in a stack.

  If you must choose one of the items, one item of the stack appears on the main path.

  >>-required_item--+-required_choice1-+-------------------------><
                    '-required_choice2-'
   
  

  If choosing one of the items is optional, the entire stack appears below the main path.

  >>-required_item--+------------------+-------------------------><
                    +-optional_choice1-+
                    '-optional_choice2-'
   
  

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