a element

Type:Text Characteristics
Attributes: color  •  font-family  •  font-feature-settings  •  font-stretch  •  font-style  •  font-variant  •  font-weight  •  font  •  justification-ratio  •  letter-spacing  •  outline-color  •  outline-width  •  overprint  •  requote  •  suppress-ligatures  •  text-decoration  •  text-transform  •  align  •  alt  •  background-color  •  background-image-dpi  •  background-image-position  •  background-image  •  background-pdf  •  border-color  •  border-style  •  border-width  •  border  •  clear  •  corner-radius  •  display  •  float  •  font-size  •  height  •  href  •  left  •  line-cap  •  line-height  •  line-join  •  margin  •  onmouseover  •  overflow  •  padding  •  page-break-after  •  page-break-inside  •  position  •  rotate  •  size  •  title  •  top  •  vertical-align  •  visibility  •  white-space  •  width  •  class  •  colorspace  •  direction  •  id  •  lang  •  pdf-tag-background-color  •  pdf-tag-border-color  •  pdf-tag-border-style  •  pdf-tag-border-thickness  •  pdf-tag-color  •  pdf-tag-list-numbering  •  pdf-tag-placement  •  pdf-tag-table-colspan  •  pdf-tag-table-headers  •  pdf-tag-table-rowspan  •  pdf-tag-table-scope  •  pdf-tag-table-summary  •  pdf-tag-text-align  •  pdf-tag-type
See:span u

A type of span normally used to create a hypertext link around a piece of text.

In HTML, the a tag was required whenever a hypertext link needed to be placed, and could be used around text or images. In this packages XML syntax, a hypertext is signified by specifying the href attribute. This can be on any element, not just an a, as you can see in the examples.

The a element is here mainly because it's familiar to users coming from HTML. From a CSS2 point of view however, it's identical to the u element.

To define a hypertext link, use the <A> tag with an href attribute to indicate the start of the hypertext link, and use the </A> tag to indicate the end of the link. When the user clicks any content between the <a href> and </A> tags, the link is activated. 

<a href="#Chapter1">Go to Chapter 1&lt/a>

is identical to

<span text-decoration="underline" href="#Chapter1">Go to Chapter 1&lt/a>