Added a predefined glyph group for Portuguese. Thanks @graffo!

generate/index.html

@@ -119,6 +119,8 @@ <h3>Include the following glyphs (if available)</h3>
 								<dd>A refined selection of Cyrillic characters commonly used in the Russian language. (66 glyphs)</dd>
 								<dt><label for="iglyphs_greek"><input type="checkbox" name="glyphs[]" id="iglyphs_greek" value="0x370-0x3FF" /> Greek and Coptic</label></dt>
 								<dd>The whole Greek and Coptic Unicode block. For more information, see <a href="http://en.wikipedia.org/wiki/Greek_alphabet#Greek_in_Unicode" class="external">Greek in Unicode</a>. (up to 144 glyphs)</dd>
+								<dt><label for="iglyphs_pdia"><input type="checkbox" name="glyphs[]" id="iglyphs_pdia" value="0xC0-0xC3,0xC7,0xC9,0xCA,0xCD,0xD3-0xD5,0xDA,0xDC,0xE0-0xE3,0xE7,0xE9,0xEA,0xED,0xF3-0xF5,0xFA,0xFC" /> Portuguese Diacritics</label></dt>
+								<dd>Commonly used characters with diacritics. Combine with Basic Latin. For details, see <a href="http://en.wikipedia.org/wiki/Portuguese_alphabet" class="external">Portuguese alphabet</a>. (26 glyphs)</dd>
 							</dl>
 
 							<a href="#extra-glyphs" id="more-extra-glyphs" class="more">Show all options</a>