Template:Em/doc

Purpose
The makes it faster and easier to apply the   HTML element to text, and more importantly to indicate to human editors and Wikipedia bots they should not use   or  typographic italicization to replace the intentional and semantically meaningful. Emphasis () is usually rendered visually in an italic (oblique a.k.a. slanted) typeface by default on graphical browsers, but can be parsed and acted upon in customizable ways with style sheets, apps, and text-to-speech screen readers. It is semantic markup, i.e. markup that conveys meaning or context, not just visual appearance.

Simple italicizing ( or ) is purely typographic and is semantically meaningless; however, there are some occasions when simple italics are preferable to the emphasis template, most often for titles of publications (books, films, albums, etc.), foreign words and phrases, words as words (when quotation marks are not used for that purpose), names of ships, scientific names of genera and below and other cases where stylistic conventions demand italics, but they convey no sense of emphasis.

The average reader, and average editor, do not and need not care about this distinction most of the time, but it can be important and editors who understand it can use this template as a baseline insurance against accidental or uninformed replacement by bots and human editors, as well as to add web accessibility.

Usage


or, if the text to be emphasized contains an equals sign:

These both render as:

This template puts intentional and explicit  (emphasis) [X]HTML markup around the text provided as the first parameter. It is safest to always use the 1.

Optional parameters
Advanced HTML values can be passed through the template to the HTML code:
 * role takes a WAI-ARIA role; adds  to the HTML code
 * class takes a class name (or multiple class names, separated by spaces); adds  to the HTML code
 * style takes inline CSS input; adds  to the HTML code
 * id takes a valid, unique HTML id (must begin with an alphabetic letter); adds  to the HTML code
 * title takes text, which cannot be marked up in any way, and displays it as a pop-up "tooltip" (in most browsers) when the cursor hovers over the span

Use cases
This template is made to mildly emphasize an important word or phrase in a passage, in a way that is (unlike simply italicizing it) semantically meaningful markup. With this technique, the emphasized text stands out from the rest of the nearby text in most if not all visual browsers and some text-to-speech screen readers (which usually ignore purely typographic italicization), without strongly affecting. It can also be parsed by user agents and other software as definitively indicating emphasis, not just some typographic italicized effect for appearance's sake. Therefore, it only should be used sparingly in articles to highlight something being stressed (e.g., to represent mild vocal emphasis). Example:

"Contrary to reports, she was dead after all."

It is also occasionally used for disambiguation, e.g. between two adjacent but different uses of the same word or homonym ("What it is a kind of custard."), but this usage is not often encyclopedic and can (when not found in a direct quotation) usually be rewritten to avoid the awkward construction.

When this template should not be used
Because is strictly for semantic (meaningful) emphasis, it should  be used for layout, typography conventions (titles, foreign words, scientific names of genera and species, etc.), and other cases that are not true emphasis. In these different cases, italics Wikicode, which is rendered as  for the browser or other user agent, should be used instead, or special markup for a particular case, such as  or  for variables in computer science and mathematics. should also not be used when the text to which it is applied is italicized for some other reason (e.g., it is part of a book title); in such cases use instead. Usually avoid using in non-quoted sentences that end in an exclamation point. And it is usually excessive to use on terms that are Wikilinked, since the link markup acts as a form of emphasis itself.


 * "The New York Times is an American daily newspaper." This example should use.

TemplateData
{	"params": { "1": {			"label": "Text", "description": "The text to format.", "type": "content", "required": true },		"role": { "label": "WAI-ARIA role", "description": "The WAI-ARIA (Accessible Rich Internet Applications) role that the text plays. Adds the \"role\" attribute with the provided value to the HTML code.", "type": "string", "suggestedvalues": [ "math", "presentation", "none", "note" ]		},		"class": { "label": "HTML class(es)", "description": "Name(s) of the class(es), separated by spaces, to be added to the HTML \"class\" attribute.", "type": "string" },		"style": { "label": "CSS formatting markup", "description": "CSS directives for formatting the text. Added to the HTML \"style\" attribute.", "type": "string" },		"id": { "label": "HTML unique identifier", "description": "A unique HTML identifier, which must start with an alphabetic letter. Added to the \"id\" attribute.", "type": "string" },		"title": { "label": "Tooltip text", "description": "Explanatory text of the pop-up tooltip to be displayed on hover. Added to the HTML \"title\" attribute.", "type": "string" }	},	"description": "Formats text with the HTML emphasis element. Do not use for layout, typography conventions (titles, foreign words, scientific names of genera and species, etc.), and other cases that are not true semantic (meaningful) emphasis; use normal italics formatting instead.", "format": "inline" }