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In HTML and XML, a numeric character reference refers to a character by its Universal Coded Character Set/Unicode code point, and uses the format: &#xhhhh;. or &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form.
Astronomical symbols – Symbols in astronomy; Chemical symbol – Abbreviations used in chemistry; Chinese punctuation – Punctuation used with Chinese characters; Currency symbol – Symbol used to represent a monetary currency's name; Diacritic – Modifier mark added to a letter (accent marks etc.)
A hashtag is a kind of metadata tag marked by the prefix #, sometimes known as a "hash" symbol. This form of tagging is used on microblogging and social networking services such as Twitter, Facebook, Google+, VK and Instagram. The hash is used to distinguish tag text, as distinct, from other text in the post.
For example, an alt attribute for an image of an institution's logo should convey that it is the institution's logo rather than describing details of what the logo looks like. [ 10 ] [ 11 ] The alt attribute is intended to be used for short and concise descriptions of the image.
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LinkedIn uses location, and audience attributes such as company, job experience, education, demographics, interests, and traits, as well as custom audiences created using matched audiences. [13] All of these indicated ads are displayed to LinkedIn users if they are targeted for what is being promoted. A fast-growing social media app called TikTok
Facebook allows ads to appear inside Instant Articles. Publishers can keep 100% of the revenue if they sell the ads, and Facebook gets its standard 30% cut if it sells the ads. [12] [13] With the launch of Instant Articles, Facebook provided guidelines regarding the ad formats supported by Instant Articles.
In computing, a Unicode symbol is a Unicode character which is not part of a script used to write a natural language, but is nonetheless available for use as part of a text. Many of the symbols are drawn from existing character sets or ISO / IEC or other national and international standards.