code: private void createAnonymousInline(ElementBox root)
      {
          Vector<Box> nest = new Vector<Box>();
          for (int i = 0; i < root.getSubBoxNumber(); i++)
          {
              Box sub = root.getSubBox(i);
              if (sub instanceof ElementBox)
                  nest.add(sub);
              else
              {
                  ElementBox anbox = createAnonymousBox(root, sub, false);
                  anbox.addSubBox(sub);
                  nest.add(anbox);
              }   
          }
          root.nested = nest;
          root.endChild = nest.size();
      }
docs: Creates anonymous inline boxes if the a block box contains both the inline
  and the text child boxes. The child boxes of the specified root
  are processed and the text boxes are grouped in a newly created
  anonymous <code>span</code> boxes.
  @param root the root box