The set of symbols


The following symbols are used for language statements designing:

  • <a..z>, <A..Z> – capital and line letters of Latin alphabet;
  • <0..9> – numerals from 0 to 9;
  • <_> – the underlining;
  • < > – the space;
  • <,> – the comma;
  • <=> – the equal;
  • <;> – the semicolon;
  • <:> – the colon;
  • <[> – left bracket;
  • <]> – right bracket;
  • <> – double quotation marks;
  • <(> – left parenthesis;
  • <)> – ruling parenthesis;
  • <+> – the plus;
  • <-> – the minus;
  • <*> – the asterisk;
  • </> – the slash;
  • <\> – the backslash;
  • <^> – the pointer;
  • <$> – the dollar;
  • <<> – left angular bracket;
  • <>> – ruling angular bracket;
  • <#> – not equal;
  • <.> – the point;
  • <@> – commercial A.

 

The comments and literal strings allow any symbol.

The <Identifier> – is a unceasing letters sequence, numerals and symbols <_>, <@> and <$>, and must begin from the letter. Capital and line letters are indistinguishable in the identifiers.

The <Number> – is an unceasing sequence of numerals, containing only one decimal point. The signs <+> or <-> is allowed before the number. As default, the number is interpreted as positive.

The <Literal strings> – are the arbitrary symbols sequences, marked by the double quotation marks.