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- HTML Character Reference
- Complete tables of HTML entities used by HTML 4.01 and XHTML 1.0. Includes the ISO Latin 1 character set, symbols, mathematical symbols and Greek letters, and markup-significant and internationalization characters.
- HTML 4 Latin-1 Character Escape Sequences
- Covers the first 256 characters.
- From the W3C (XHTML 1.0 DTD, 160 and above)
- The HTML Document Character Set
- In addition to the standard ISO-8859-1 (Latin-1) character repertoire, the author has included a selection of Unicode characters. This is designed as a look-up reference for HTML authors.
- How to Understand Color Codes
- In this tutorial you'll learn how the mechanism behind color code values works with the aid of a simple program. The program, Colourcoder, is designed to not only let you find a color you want with ease, but also help you gain a more intuitive grasp of color codes while you use it.
- Websafe and Reallysafe Palettes
- The "Websafe" palette is a set of 216 colors that are, supposedly, guaranteed to appear as intended on all graphical displays when used in HTML, CSS, and images embedded in Web pages.
- Color Schemer Online
- A free online version of the ColorSchemer products. Enter an RGB or HEX value to get a set of matching colors. You can even lighten and darken your scheme or pick colors from a websafe palette.
- Adobe Kuler
- The Web-hosted application for generating color themes that can inspire any project.
- Web Page Colour Composer
- An interactive Web tool with which you can create a detailed Web page color scheme and generate the CSS and HTML code to be inserted into your Web page.
Document Type Definition (DTD)
- HTML 4.01 Document Type Definition
- This is HTML 4.01 Strict DTD, which excludes the presentation attributes and elements that W3C expects to phase out as support for style sheets matures.
- DTD List
- When authoring document is HTML or XHTML, it is important to add a doctype declaration (DTD). The declaration must be exact to have the desired effect, which makes it sometimes difficult. To ease the work, below is a list of recommended declarations that you can use in your Web documents.