SGML entities are almost a perfect superset of HTML entities, with the exception of ', which maps to U+0027 (the normal single-quote character) in HTML but U+02BC (MODIFIER_LETTER_APOSTROPHE) in SGML.

2 How to encode and escape HTML output? One of the most common scenarios where you need to use encoding and escaping techniques is when you output user input or dynamic data on your web page as HTML.

The following example uses ODS to display the output in HTML with a table of contents. The data is the population of the United States in millions recorded at ten year intervals starting in 1790 and ...