How to implement globalization and localization in angular 12.

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Placeholders  are the containers in  layouts  that hold such content as  text  (including body  text, bulleted lists, and titles),  tables,  charts, smartart graphics, movies, sounds, pictures, and clip art.  slide layouts  also contain the theme (colors, fonts, effects, and the background) of a  slide.

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All sites use html, css and javascript for front end programming. 90% use php for server side, and the other 10% use nodejs or something.