The are several aspects in the development of web pages. You have probably already received some day a file, which your wordprocessor could not read because it was written by a more recent version than yours or by another than yours. So the question is raised which wordprocessor we must use for writing web pages. Also most recent wordprocessor offer the possibility of saving a document in HTML format. A screen can show less text than a page in a book.
Links have a special colour.
More information'and make clear that these words are a link. Normally this is done by colouring links in blue. A mark-up language is a set of instructions for the formatting of a text or other data, which is written in clear in the text. Furthermore the original HTML had to be used over 7 bit connection, which is usual for Unix telnet connections. All characters with a numerical value greater than 128 must be written in a special way.