Select element - mark the currently selected element as part of a subset . Marking is most easily done with Ins .
Marked elements have a plus sign in the leftmost column.
Element number expresses the elements physical place in a given collection and is used as a unique element identifier. This option is useful in quickly reviewing the material contained in the browser Random test - start random test on the contents of the browser. All elements will be repeated in the standard way but the repetitions will have no effect on the learning process Random learning - start random learning the elements in the browser. Memorized elements will not be affected but the pending elements will be memorized Process all - process all elements contained in the browser, e.g. memorized all pending elements, move the elements in the knowledge tree , etc. You can use this option to sort the pending queue by ordinal numbers, by title, etc.