For text to look "proper" (filled in) rather than just an outline: Select your text object. Go to the window. Change the Mode from Line to Fill .
Use the window (TV icon) to verify it looks correct before burning. Helpful Text Features in 1.3.01 lightburn-1-3-01
If you have text that behaves like a shape and you cannot change the words, it has likely been "converted to paths." To maintain "proper" editable text: For text to look "proper" (filled in) rather