Wikipedia:Manual of Style/Tables

Tables are a way of presenting information in rows and columns. They can be useful for a variety of content presentations on Wikipedia, but should be used only when appropriate; sometimes the information in a table may be better presented as prose paragraphs or as an embedded list. Tables can also make a page much more complicated and difficult to edit, especially if some of the more complex forms of table coding are used, so even if a table is used some consideration needs to be given to the table structure.

Avoid referring to tables as being located on the left or right of a display page. Placement of page content is different in mobile view compared to desktop view of Wikipedia, and is meaningless to people having pages read to them by assistive software. Instead, use captions to identify tables.

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