It's a simple debug panel. Enable Dp plugin to use it.
Here's how you can use it:
# Insert or update row by id with provided value
Dp.push(&"FPS", "%.0f" % Engine.get_frames_per_second())
# Hide row by id
Dp.hide(&"FPS")
# Show row by id
Dp.show(&"FPS")
# Erase row by id
Dp.erase(&"FPS")
# Remove all rows from panel
Dp.clear()
# Debug panel visibilty
Db.visible = false
Db.visible = true
