Multi-page DjVu documents are composed of a number of component files. Most component files describe a specific page of a document. Some component files contain information shared by several pages such as shared image data, shared annotations or thumbnails. Many djvused commands operate on selected component files. All component files are initially selected. The following commands are useful for changing the selection.
n Print the total number of pages in the document.
в порядке следующей ненужной информации djvutoxml и djvuxmlparser можно использовать только для работы с текстовыми слоями, всё остальное через djvused