text: HEADERS += \
      IFeature.h \
      IProjection.h \
      IImageManager.h \
      IMapAdapter.h \
      IRenderer.h \
      IMapAdapterFactory.h \
      IMapWatermark.h \
      IBackend.h \
      ILayer.h \
      IProgressWindow.h \
      IMerkMainWindow.h \
      ../../../interfaces/IDocument.h
  