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.