*  rootpage - The root of the pagetree (defaults to @space)
          o SPACEKEY:pagename - a specific page in a specific space
          o
          o pagename - a specific page in the current space
          o @self - the current page
          o @parent - the parent of the current page
          o @space - the currently viewed space showing all top-level pages and also news items
          o @root - same as @space
          o @home - the homepage of currently viewed space (does not include news items)
          o @dashboard - the Confluence dashboard showing all spaces the user has access to
    * space - the space that should be used for the root of this pagetree (optional)
    * page - the name of the page that should be use for the root of this pagetree (optional)
    * target - the target window that the pages should open into (eg. _blank or _self)
    * showIcons - whether to show icons in the tree (default true)
    * selectionMode - the default click selection mode: node (default) or row
    * autoCollapse - automatically collapse other nodes when a node is expanded: false (default) or true
    * indent - indent each layer of the tree: true (default) or false
    * showRoot - display the root node: true (default) or false
    * branchStyle - the branch style (may be deprecated in future release)
          o plus-lines: +/- buttons, dotted lines
          o plus-nolines: +/- buttons, no lines
          o ball-lines: yellow sphere buttons, dotted lines
          o ball-nolines: yellow sphere buttons, no lines
          o arrow: green arrow buttons, no lines
    * iconStyle - the icon style:
          o computer - computer style icons
          o website - website style icons
          o builder - Adaptavist's Builder style icons
          o bookshelf - bookshelf style icons
    * class - the css class to attach to the pagetree
    * openpage - open the selected page on click: true (default) or false
    * allowdrag - allow pages to be moved in the space/site by dragging and dropping in the tree: false (default) or true
    * treename - the name of the tree (used with pagepanel macro)
    * titletip - use the page title as the tooltip
    * initialDepth - restrict the expansion at startup to x levels