It allows users to embed any online content within Notion pages using Embed.ly. Annotations in Java are a way to embed metadata into code. The following HTML5 code fragment will embed a WebM video into a web page. Flickr provides code to embed albums into blogs, websites and forums. OneDrive allows users to embed their Word, Excel and PowerPoint documents into other web pages. It allows to embed a thumbnail image in 3 different formats. Code to embed the Flash video on other websites was also distributed. In addition, AVI files can embed Extensible Metadata Platform (XMP). This included Perl-like variables, form handling, and the ability to embed HTML. The app also allows users to freely embed pictures and sounds into their messages. Typekit is a service which allows subscribers to embed fonts into online documents. Apple Pay allows vendors to embed an Apple Pay button on their websites. Serial data communications can also embed the clock within the serial data stream. With interface synthesis the designer does not embed interface protocols in the source description. For instance, a 16&colon;9 broadcast could embed a 4&colon;3 commercial within the 16&colon;9 image area.