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Index: X

x-height: 3.2.2.1. em and ex units
XML (Extensible Markup Language): 1.2.6. Preparing for the Future
display property and: 2.9.1. Why Does the display Property Exist?
selectors in: 2.1.2. Simple Selectors


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The assignment of the keywords normal andbold is straightforward enough, of course. As forthe numbers, 100 through 300are assigned to the Regular face because there isn't a lighterface available. 400 goes to Regular as expected,but what about 500 ? It is assigned to the Regular(or normal) face because there isn't aMedium face available; thus, it is assigned the same as400. As for the rest, 700 goeswith bold as always, while 800 O'Reilly & Associates, Inc. All Rights Reserved.

WARNING

Percentage values refer to the width of the parent element.

These properties operate as you'd expect by now. For example, the following two rules will give the same amount of padding:

document. If you set the background of H1 elementsto be navy, then the whole background of everyH1 will be the same dark blue color.

In CSS, you can set both the foreground and background colors of anyelement, from the BODY down to the underline anditalics tags, and almost everything in between -- list items,entire lists, headings, hyperlinks, table cells, form elements, andeven (in a limited fashion) images. In order to understand how thisworks, though, it's important to understand what's in the

  • Create your own Java object model (adapter) that uses DOM to manipulate the information in your document object tree (that is created by the parser). This is slightly different from the 2nd option, because you are still using the DOM API to manipulate the document information as a tree of nodes, but you are just wrapping an application specific API around the DOM objects, so its easier for you to write the code. So your object model is an adapter on top of DOM (ie, it uses the adapter pattern). This application specific API uses DOM and actually accesses or modifies information by going to the tree of nodes. Changes made to the object model still have to be made persistence (if you want to save any changes). You are in essence creating a thin layer on top of the tree of nodes that the parser creates, where the tree of nodes is accessed or modified eventually depending on what methods you invoke on your object model.
  • Depending on which of the three options you use to access information using your Java classes, this information must at some point be saved back to a file (probably to the one from which it was read). When the user of your application invokes a File->Save action, the information in the application must be written out to an ApplicationML file. Now this information is stored in memory, either as a (DOM) tree of nodes, or in your own proprietary object model. Also note that most DOM XML parsers can generate XML code from DOM document objects (but its quite trivial to turn a tree of nodes into XML by writing the code to do it yourself). There are 2 basic ways to get this information back into an ApplicationML file: