there has a question that I found , when the components have two or more same component,it not notice
wrong if the same components have different order in every layer，I wonder if I can understand my description.
Does this help: https://glyphsapp.com/tutorials/multiple-masters-part-2-keeping-your-outlines-compatible
I goto look at it now，thanks
How do I display all the lines? when I selected *Show Master Compatibility， It only shows one line which this component selected .others are not show
I got it, select all can do it