Source texts in Malaga are format-free; this means that between lexical symbols
(strings, identifiers, keywords, numerals and symbols such as ``+'',
``'' or ``:='') there may be blanks or newlines (whitespaces) or
comments. Between two identifiers or two keywords there must be at
least one whitespace to separate them syntactically.
In this documentation, the syntax of the source text components is defined formally in EBNF notation. The EBNF lines are printed in typewriter style and headed by ``$$''.