X Nested rules under HTML Strict _ Experience Exchange

The Translator notes: Time is not hurried to study carefully, I hope we can discuss and improve the explanatory part (now the explanation is not very comprehensive).

Here is a tag nesting rule that must be followed in HTML 4 Strict and XHTML 1.0 Strict, such as you can't embed one of these conventions inside.

Description

* In order to facilitate reading, the tags in this article use uppercase (according to XHTML rules, element names must be lowercase, such asand should not be）
* Lowercase words indicate a group or series of HTML tags
* Each entry (label) follows a list of labels, which, if not, indicates that the item (tag) is not allowed to contain any tags inside. This means that the entry can contain only plain text content (#PCDATA, see below). If stated (empty), this means that the entry is not allowed to contain any form of content inside.
* #PCDATA means "parsed character data", which is plain text content (excluding any HTML tags, but escaped content can exist, such as in and out)
* CDATA means "character data", which means that the plain text content of the escaped content is not included, and the details can refer to CDATA confusion
* Excluding ... The inclusion of the listed elements directly or indirectly is not intended



screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt= ' Click View full image in new window \nctrl+ mouse wheel zoom in or zoom out ';} "border =0>

Note 1. The above content is based on the Strict DTD [HTML 4.01 specification].

Note 2. For XHTML 1.0, basically consistent, different points are as follows:

* FOR