CHAPTER 1  Notation:  Symbols and Separators  1.A.  Separators  1.B.  Special Symbols and Word Symbols  9  Here are the lists of special symbols and word symbols used to write  Pascal programs. Note that two--character special symbols are written  without any intervening separators.  Blanks, ends-of-lines (line separators), and comments are considered  as symbol separators. No part of a separator can occur within a Pascal  symbol. You must use at least one separator between two consecutive  identifiers, word-symbols, or numbers.  A  comment  begins with either { or  (* (not inside a character string)  and ends with either a } or  *). A comment may contain any sequence of  end-of-lines and characters except} or *). A comment may be replaced  with a space in the program text without altering its meaning.  Often you can improve the readability of a Pascal program by  inserting blanks, end-of-lines (blank lines), and comments in it.  Pascal programs are represented by symbols and symbol separators.  Pascal symbols include  special symbols, word symbols,  identifiers,  numbers, character strings, labels, and directives.  Symbol separators  are explained in the next section. 