3. The method of establishing a plain text document from a HTML document as claimed in claim 1 , wherein the data structure further stores an information about the rest of the HTML document of the pre-processed HTML document.
3. The method of establishing a plain text document from a HTML document as claimed in claim 1 , wherein the data structure further stores an information about the rest of the HTML document of the pre-processed HTML document. 5. The method of establishing a plain text document from a HTML document as claimed in claim 3 further comprises the step of identifying the title of the HTML document using the information stored in the data structure, and deleting the information about the HTML element containing the title and the information about the HTML element(s) ahead of the HTML element containing the title from the data structure before the step (D).