Page 81 - CA 165 ver 1.0 Class 10
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4.    What are Lists? Explain the types of lists giving suitable examples.
                     Ans.  Lists are series of items i.e. names, values that can be arranged in an ordered way. The list may be either
                         ordered or unordered. An ordered list  is  a series  of items  displayed in sequence with it whereas an
                         unordered list displays special bullets in the beginning of each list items only. Ordered or Numbered list is
                         used to display a list of items in sequence. It begins with <OL> tag and it requires <LI> (List Item) tag to
                         be used along with it. The items which are followed by <LI> tag appear in sequence (e.g. numbers 1, 2, 3,
                         etc.) on the browser window.
                         Example : <OL>

                             <LI> List 1

                             <LI> List 2
                             ...............
                             </OL>
                         Unordered or Unnumbered list is used to insert bullets with the list of items. The <LI> (List item) tag is
                         nested inside the <UL> tag. The ‘TYPE’ attribute defines the type of bullets that is in the list. For example:
                         disc, square, circle, etc.

                         Example : <UL TYPE = “square”>
                             <LI> List1
                             ...............

                             </UL>
                         Definition list is used where terms are listed along with their description like in a dictionary or encyclopedia.
                         The definition list is the ideal way to present a glossary, list of terms, or other name/ value list.

                         <DL> Defines the start of the list

                         <DT> A term
                         <DD> Term definition
                         </DL> Defines the end of the list
                     5.   Write a note on History of HTML.
                     Ans.  The term ‘Hypertext’ was coined by Ted Nelson around 1965. It is a collection of documents containing
                         cross-references or ‘links’ which with the help of a browser program helps a user to move easily from one
                         document to other.
                         During 1980, IBM developed General Markup Language (GML), after which the (ANSI) American National
                         Standard Institute published a working draft of Standard GML or SGML.
                         SGML, which was comparatively a higher level markup language, was adopted by US Internal Revenue
                         Service and Department of Defense, USA.
                         Simplifying further, HTML was developed in 1990 as a subset of SGML, whose credit goes to Tim Berners
                         Lee,  a scientist at  CERN (Conseil Européen  pour  la Recherche Nucléaire, a European  practical  physics
                         Laboratory in Geneva, Switzerland).
                         HTML and SGML, though are from the same family but only a few browsers support both. HTML was
                         designed to create web pages that can be viewed on any type of computer architecture or by using any
                         web browser on Internet.








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