• Implemented the collections of lessons that should make it easier to manage lessons when using very structured vocabularies. Through a collection of lessons it is possible to reselect with a single stroke a complex selection of lessons previously saved.
• Implemented the static collections of words through which, if desired, it is possible to practice static sets of words, that is, bypassing the lesson filter and the mechanism of degrees altogether.
• Improved the statistics of words that was exercised with error: it is now possible to choose, through the program options, the maximum number of statistically wrong words that must appear in the list and also it is possible to save that list of words in a static collection in order to be exercised at any time.
• Bug fixes.