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Index: S

S element: 4.1.6. Text Decoration
sample projects using CSS: 11. CSS in Action
sans serif fonts: 5.1. Font Families
Scalable Vector Graphics (SVG): 1.3.1. Limited Initial Scope
scaling factor
absolute font sizes: 5.3.1. Absolute Sizes
line height and: 4.1.2. The Height of Lines
scaling line heights: Scaling the line heights
scrollbars: Overflow
block-level elements and: Height
selectors: 2.1.1. Rule Structure
class: 2.3. Class and ID Selectors
2.3.1. Class Selectors
CSS2: 10.2. CSS2 Selectors
grouping: 2.2.1. Grouping Selectors
ID: 2.3. Class and ID Selectors
2.3.2. ID Selectors
pseudo-class: 2.4.1. Pseudo-Class Selectors
pseudo-element: 2.4.2. Pseudo-Element Selectors
A paragraph.</P></DIV><P>The next paragraph.</P>
Figure 8-23

Figure 8-23. The effects of a negative bottom margin

What's really happening in Figure 8-23 is thatthe elements following the DIV are placedaccording to the location of the bottom of the

semicolon (;) terminating declarations: 2.1.3. Declarations
2.2.2. Grouping Declarations
serif fonts: 5.1. Font Families
servers, external style sheets and: 11.2.11. Serving CSS Up Correctly
seven properties of horizontal formatting[seven properties of horizontal formatting: Horizontal properties
shadow, adding to text: 10.3.2. text-shadow
shorthand hex notation: Short hexadecimal colors
shorthand properties: 7.4.4. Shorthand Border Properties
background property: 6.2.6. Bringing It All Together
border property: 7.4.4. Shorthand Border Properties
font property: 5.5. Using Shorthand: The font Property
list-style property: 7.7.4. List Styles In Shorthand
shrink-wrapping content: Setting width and height
shrinking text: 11.2.6. The Incredible Shrinking Text!
side-offset properties: 9.1.2. Side Offsets
sidebar: 11.1.2. Case 2: Library Catalog System Interface
images in: 6.2.2. Repeats with Direction
simulating class/ID selectors: Simulating class and ID
single attribute values, matching: Matching single attribute values
single quotation marks ( ): 5.1.3. Using Quotation Marks
single-side margin properties: 7.3.4. Single-Side Margin Properties
slanted text: 5.4.1. Fonts with Style
small-caps text: 5.4.2. Font Variations
sorting (cascade rules): 2.8. The Cascade
spaces separating keywords: 2.1.3. Declarations
2.1.3. Declarations
spacing: 4.1.4. Word Spacing and Letterspacing
alignment and: Spacing, alignment, and font size
letter: Letterspacing
speak properties: 10.7. Tables
special effects
background colors: 6.1.3. Special Effects
perfect alignment of backgrounds: Interesting effects
text shadow: 10.3.2. text-shadow
specificity: 2.7. Specificity
inheritance and: 2.7.1. Inheritance and Specificity
specificity sorting: 2.8. The Cascade
speech-synthesis browsers: 1.1.1. What a Mess
1.1.1. What a Mess
10.8.2. The Spoken Word
stacking context: 9.5. Stacking Positioned Elements
stacking positioned elements: 9.5. Stacking Positioned Elements
sticky notes: 9.3. Absolute Positioning
stress property: 10.8.2. The Spoken Word
STRIKE element: 4.1.6. Text Decoration
strikethrough (see line-through)
structural languages: 1.2.6. Preparing for the Future
structural markup: 1.1.1. What a Mess
structure of rules: 2.1.1. Rule Structure
STYLE attribute: 1.4.6. Inline Styles
2.8. The Cascade
quotation marks and: 5.1.3. Using Quotation Marks
specificity and: 2.7.1. Inheritance and Specificity
style declarations: 1.4.4. Actual Styles
STYLE element: 1.4.2. The STYLE Element
style sheets
alternate, defining: LINK attributes
cascading (see CSS)
consistency, achieving with: 11.1.1. Case 1: Consistent Look and Feel
document: 1.4.2. The STYLE Element
embedded: 1.4.2. The STYLE Element
external (see external style sheets)
ignored when not recognized: 1.4.4. Actual Styles
imported: 1.2.3. Using Your Styles on Multiple Pages
overriding styles in: No floating at all
linking to HTML documents: 1.4.1. The LINK Tag
making concise through grouping: 2.2. Grouping
naming: 1.4.1. The LINK Tag
reader: 1.2.4. Cascading
styles: 1.4.4. Actual Styles
for borders: 7.4.1. Borders with Style
disappearing with Netscape Navigator: 11.2.10. Disappearing Styles
inline: 1.4.6. Inline Styles
using on multiple pages: 1.2.3. Using Your Styles on Multiple Pages
styling common elements: 11.2.4. Styling Common Elements
stylistic languages: 1.2.6. Preparing for the Future
subscript (SUB) element: 4.1.3. Vertical Alignment
subscripting: Superscripting and subscripting
superscript (SUP) element: 4.1.3. Vertical Alignment
superscripting: Superscripting and subscripting
SVG (Scalable Vector Graphics): 1.3.1. Limited Initial Scope

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contains an inline boldface element, and the second an absolutelypositioned boldface element. In the second paragraph, the styles usedwould be something like what is shown here:

P {position: relative;}   /* establish containing blocks */<B STYLE="position: absolute; top: auto; right: 0; bottom: 0; left: auto;width: 8em; height: 4em;">...</B>
Figure 9-19

Figure 9-19. The effects of absolute positioning

For the most part, the text in both paragraphs looks fairly normal.In the second one, however, the place where the boldface element classify elements into broad categories. The most popular value is probably none, which suppresses the display of an element altogether. Gratuitous use of display with a document type such as HTML can be dangerous, since HTML already has a display hierarchy defined. However, in the case of XML, which has no such hierarchy, display is indispensable.

In CSS2, the range of values for display is dramatically expanded. See Chapter 10, "CSS2: A Look Ahead", for more details.


XML documents may be stored in files or databases. When stored in files, XML documents are simply plain text files with tags (and possibly DTDs). It is very easy to save your XML documents to a text file and pass the text file around to other machines, platforms and programs (as long as they can understand the data). In the worst case scenario, XML documents (files) can be viewed in a text editor on just about any platform.

XML documents are also naturally committed to a database (relational or object) or any other kind of XML document store. There are commercial products available which allow you to save XML documents to an XML storage layer (which is not a database per se), like Datachannel's XStore and ODI's eXcelon. These XML store solutions are quite expensive ($10,000 to $20,000 range).

XML documents are also quite naturally retrieved from a persistence layer (databases, file systems, XML stores). This lends XML to be used in real world applications where the information being used by different parts of a system is the most important thing.

XML is platform independent, textual information