!!! Introductory
<<forEachTiddler
      where 'tiddler.tags.contains("%course") &
                  tiddler.tags.contains("introductory")'
      sortBy 'tiddler.title'
      write "'* [['+tiddler.title+'|'+tiddler.title+']]\n'">>
!!! Beginner
<<forEachTiddler
      where 'tiddler.tags.contains("%course") &
                  tiddler.tags.contains("beginner")'
      sortBy 'tiddler.title'
      write "'* [['+tiddler.title+'|'+tiddler.title+']]\n'">>
!!! Intermediate
<<forEachTiddler
      where 'tiddler.tags.contains("%course") &
                  tiddler.tags.contains("intermediate")'
      sortBy 'tiddler.title'
      write "'* [['+tiddler.title+'|'+tiddler.title+']]\n'">>
!!! Advanced
<<forEachTiddler
      where 'tiddler.tags.contains("%course") &
                  tiddler.tags.contains("advanced")'
      sortBy 'tiddler.title'
      write "'* [['+tiddler.title+'|'+tiddler.title+']]\n'">>