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| + | **Backus-Naur Form** (BNF) is a highly technical representation of an expression or programming language. As such, it describes with detail the inner workings of the Cyrious Formula Language (CFL) engine. | ||
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| + | Those not familiar with BNF can skip this section without missing anything. It is provided only as a reference for individuals who might already be familiar with the syntax. | ||
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| + | || **Field Name** || **Example** || | ||
| + | || IDHead || ('A' … 'Z', 'a' … 'z') || | ||
| + | || IDTail || ('A' … 'Z', 'a' … 'z', '0' … '9', '_') || | ||
| + | || Digit || (0123456789) || | ||
| + | || NumericLiteral || (Digit)* | (Digit)* . (Digit)* || | ||
| + | || Printable || (' ' … '\~') || | ||
| + | || StringLiteral || "(printable)*" || | ||
| + | || || :: (SyntaxDeclaration) || | ||
| + | || || :: | 'Spreadsheet' | 'Program' || | ||
| + | || || :: ()* || | ||
| + | || || ::'SECTION' SectionName 'ENDSECTION' || | ||
| + | || || :: (; )* || | ||
| + | || || :: | | | || | ||
| + | || || :: 'BEGIN' (;)+ 'END' || | ||
| + | || || :: ':' || | ||
| + | || || :: ' | ||