ToolTiptext -

Transparent font04.htm  - Sets transparent Fonts.

Check the third of the nine small checkboxes to tell the system to use transparent fonts each on their own backgrounded border determined by the GridBlack Slider. That action will leave very colorful "Jet Trails" all over the screen when you spin the grid with the Size control  checked.

This function has the same effect on items that have been made into layers.