Conventions Used in this Manual
NOTATION | DESCRIPTION | |||||
nonitalics | Words in syntax statements that are not in italics must | |||||
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| be entered exactly as shown. Punctuation characters | ||||
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| other than brackets, braces, and ellipses must also be | ||||
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| entered exactly as shown. For example: | ||||
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| EXIT; | ||||
italics | Words in syntax statements that are in italics denote a | |||||
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| parameter that must be replaced by a usersupplied | ||||
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| variable. For example: | ||||
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| CLOSE filename | ||||
[ ] | An element inside brackets in a syntax statement is | |||||
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| optional. Several elements stacked inside brackets | ||||
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| means the user may select any one or none of these | ||||
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| elements. For example: | ||||
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| A | User may select A or B or neither. | ||
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| B | |||
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{ } |
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When several elements are stacked within braces in a | ||||||
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| syntax statement, the user must select one of those | ||||
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| elements. For example: | ||||
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| A |
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| B User must select A or B or C. | |||
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| C |
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... | A horizontal ellipsis in a syntax statement indicates | |||||
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| that a previous element may be repeated. For | ||||
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| example: |
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| [,itemname]...; | ||||
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| In addition, vertical and horizontal ellipses may be | ||||
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| used in examples to indicate that portions of the | ||||
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| example have been omitted. | ||||
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| A shaded delimiter preceding a parameter in a syntax | ||||
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| statement indicates that the delimiter must be |
supplied whenever (a) that parameter is included or
(b) that parameter is omitted and any other parameter that follows is included. For example:
itema[,itemb][,itemc] means that the following are allowed:
itema itema,itemb itema,itemb,itemc itema,,itemc
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