Entering "-" or "0" as a Value for Speed in the Speed String

[Chris Kelly]

After reading Mike's article, I know all the values for the value to the left of the equals sign. 0 = all formats, b1 = single layer Blu-ray, b2 = dual layer Blu-ray, d1 = single layer DVD, d2 = dual layer DVD, u1 = single layer 4K UHD Blu-ray, u2 = dual layer 4K UHD Blu-ray, and u3 = tripple layer 4K UHD Blu-ray. Here's what I know about the value to the right of the equals sign. 1-99 is the custom speed range. Do "-" and "0" mean the same thing (drive default / no speed control)? Being that no one replied, I tried the "0" value. It's the same thing as default speed, the "-", or not specifying a value at all..