Suggested for Further Study

  1. Create a DTD for a Bookmark List Markup Language (BLML). A bookmark list can contain folder elements and bookmarks. A folder element should have a name attribute. A bookmark element must have the following information associated with it: name, URI, and comment. The DTD must use the following entities:

    1. A general entity (that is, an abbreviation for your full name as the author of the comments).

    2. A parameter entity (that is, the name attribute is common between the folder and the bookmark elements).

  2. Here's a suggestion for an advanced DTD study. Define an element called STUFF with the following constraints:

    • The element can have A, B, and C subelements.

    • The element must have at least one of those subelements.

    • The element cannot ...

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