This toggle will enable the Version 7 style letter statistics, which are multi-line and can be more informative, but can slow down the system a bit. If you come from LED Wizard 7, when you load an .lw file with letter statistics, the software will ask if you want to bring over your LED Wizard 7 letter statistics configuration, and then you can update the statistics in Version 8 and they will look similar to Version 7.