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MediaWiki stores rendered formulas in a cache so that the images of those formulas do not need to be created each time the page is opened by a user. To force the rerendering of all formulas of a page, you must open it with the getter variables action=purge&mathpurge=true. Imagine for example there is a wrong rendered formula in the article Integral
The image file name if there is no explicitly requested Alt or Caption. This is never a satisfactory option. It is possible to specify the link title text only for images with no visible caption (as described above). However, as not all browsers display this text, and it is ignored by screen readers, there is little point.
The <math> tag is best for the complex formula on its own line in an image format. If you use this tag to put a formula in the line with text, put it in the {{ nowrap }} template. The {{ math }} template uses HTML , and will size-match a serif font, and will also prevent line-wrap.
Alternate text is optional but recommended. See Alternate text for images for hints on writing good alternate text. To have some text to the left of an image, and then some more text below the image, then put in a single <br clear="all">. This will force following text down until the margins are free of floating images.
MultiMarkdown is a lightweight markup language created by Fletcher T. Penney as an extension of the Markdown format. It supports additional features not available in plain Markdown syntax. [5] There is also a text editor with the same name that supports multiple export formats. [6]
Be careful not to overstretch images for which the original file is quite small (except with SVG images, see below). If the original file is 120 pixels wide, and it's stretched beyond that, the pixels making it up will start to be visible. SVG images are an exception: Being vector images, they have no pixels, just instructions on how to draw ...
The markup can be converted programmatically for display into, for example, HTML, PDF or Rich Text Format. A markup language is a text-encoding system which specifies the structure and formatting of a document and potentially the relationships among its parts. [ 1 ]
Free images that can be reused commercially and modified are preferred. Non-free images may sometimes be used, but only in certain circumstances. Wikimedia Commons accepts only free images, which can then be used by any of the other Wikimedia projects. To use an image in an article, insert: [[File:Image name.jpg|thumb|Caption for the image]].