Example 4,  Tutorial, emphasize difficult letters

Select Main Menu\View\Performance

Click on the Histogram Log page

Use the VCR controls to get to a histogram of yesterdays drill session

Select Main Menu\Input and output\Select input device (or shift + F4)

Check that Random characters is selected.

Select Main Menu\Play\Character Filter (or Ctrl+F9)

Click on the Clear all button

In the Dynamic filter select Currently displayed log record

Make sure that “Use custom filter” is checked

Select Main Menu\Play\Play morse code (F9)

Click on the Play button