Quartus® II Help uses the Backus-Naur Form (BNF) to define the syntax of the text file formats and message variables. BNF uses the following notation:
| Characters: | Meaning: | |
::= |
"Is defined as" | |
<...> |
Identifiers (that is, variables) | |
[...] |
Optional items | |
{...} |
Repeated items (zero or more times) | |
(...) |
Grouped items | |
...|... |
Indicates a choice between items | |
:n:n |
Suffix indicates a range (for example, <name_char>:1:8 means "from 1 to 8 name characters") | |
Courier font |
Literal text in syntax descriptions. Courier font is used
to help distinguish literal text from italic variables in syntax
descriptions. |
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- PLDWorld - |
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