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Signpost/Tip of the day Tip of the day... Pretty tables When using tables in articles, consider using class="wikitable" at the top of the table, like so: {| class="wikitable". This puts a grey border around all the cells, gives heading cells a grey tint, and uses many other common formatting settings without having to spell them all out. Here are additional resources suitable for new as well as expert contributors: Introduction to tables – a four part quick introduction How to use tables – when and how tables should be used on Wikipedia Table accessibility – Manual of Style guidelines Table customising and styles – Styles and tricks to customise tables Prior tip – Tips library – Next tip See also: Table templates   Become a Wikipedia tipster To add this auto-updating template to your user page, use {{totd}} Picture of the day Picture of the day Sabella spallanzanii is a species of marine polychaete worms in the family Sabellidae. It is native to the northeastern Atlantic Ocean, Mediterranean Sea and North Sea, but has spread to various other parts of the world and is included on the Global Invasive Species Database. The species grows to a total length of 9 to 40 centimetres (4 to 16 inches) and is usually larger in deep water. It features stiff, sandy tubes formed from hardened mucus secreted by the worm that protrude from the sand, and a two-layered crown of feeding tentacles that can be retracted into the tube. This S. spallanzanii worm was photographed in Arrábida Natural Park, Portugal.Photograph credit: Diego Delso