WebVTT is a format for displaying timed text tracks (e.g. subtitles or captions) with the <track> element. The primary purpose of WebVTT files is to add text overlays to a <video>. WebVTT is a text based format, which must be encoded in UTF-8 format. Where you can use spaces you can also use tabs.
The HTML Strikethrough Element (<s>) renders text with a strikethrough, or a line through it. Use the <s> element to represent things that are no longer relevant or no longer accurate. However, <s> is not appropriate when indicating document edits; for that, use the <del> and <ins> elements, as appropriate.
The text-shadow property adds shadows to text. It accepts a comma-separated list of shadows to be applied to the text and text-decorations of the element.
The HTML Anchor Element (<a>) defines a hyperlink to a location on the same page or any other page on the Web. It can also be used (in an obsolete way) to create an anchor point—a destination for hyperlinks within the content of a page, so that links aren't limited to connecting simply to the top of a page.
The HTML <abbr> element (or HTML Abbreviation Element) represents an abbreviation and optionally provides a full description for it. If present, the title attribute must contain this full description and nothing else.
The HTML <bdi> Element (or Bi-Directional Isolation Element) isolates a span of text that might be formatted in a different direction from other text outside it.
The HTML <bdo> Element (or HTML bidirectional override element) is used to override the current directionality of text. It causes the directionality of the characters to be ignored in favor of the specified directionality.
The HTML element line break <br> produces a line break in text (carriage-return). It is useful for writing a poem or an address, where the division of lines is significant.
The HTML Citation Element (<cite>) represents a reference to a creative work. It must include the title of a work or a URL reference, which may be in an abbreviated form according to the conventions used for the addition of citation metadata.
The HTMLelement emphasis <em> marks text that has stress emphasis. The <em> element can be nested, with each level of nesting indicating a greater degree of emphasis.