Some questions about manual translations

I have some questions about translation of http://ua.php.net/manual/en/pcre.pattern.syntax.php : 1) how to translate correctly any "word" character 2)in next paragraph ------ FULL STOP Outside a character class, a dot in the pattern matches any one character in the subject, including a non-printing character, but not (by default) newline. If the PCRE_DOTALL option is set, then dots match newlines as well. The handling of dot is entirely independent of the handling of circumflex and dollar, the only relationship being that they both involve newline characters. Dot has no special meaning in a character class. ------- What does it mean - 'FULL STOP' and how to translate it? -- С уважением, Voytsekhovskyy mailto:mail@young.org.ua