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In SGML, HTML and XML documents, the logical constructs known as character data and attribute values consist of sequences of characters, in which each character can manifest directly (representing itself), or can be represented by a series of characters called a character reference, of which there are two types: a numeric character reference and a character entity reference.
Header cell (on the same line) !! It adds a header cell on the same line Data cell | It adds a data cell, whose content can optionally be placed on a new line (see also the attribute separator) Data cell (on the same line) || It adds a data cell on the same line Attribute separator | It separates HTML attributes from cell or caption content ...
HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.
Instead, the harsh reality is that the tedious hand-editing of each cell, within a row, is often required as the fastest solution, in the long run. However, some text editors do allow a repetition-loop to be defined to locate and shift every 7th line or such, as a repeated pattern that could re-arrange the columns in a large table.
There is another kind of character reference called a character entity reference, which allows a character to be referred to by a name instead of a number. (Naming a character creates a character entity.) HTML defines some character entities, but not many; all other characters can only be included by direct encoding or using NCRs.
Content may either follow its cell mark on the same line (after any optional HTML attributes); or on lines below the cell mark (beware of undesired paragraphs though). Content that uses wiki markup that itself needs to start on a new line, such as with lists, headings, or nested tables, must be on its own new line.
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [vague] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.
The name of an HTML element is the name used in the tags. The end tag's name is preceded by a slash character /. If a tag has no content, an end tag is not allowed. If attributes are not mentioned, default values are used in each case.