... look at how letters in a Group are related to each other in the way they are written. You can see the differences are very small. Below is an example of one Group. The letter in the center is the first Family of this group. As you can see, Family #2, #3, #5 differ from Family #1 (center) only by different extensions that are in red. If you are to remove those red extensions, you will be left with the center letter. Similarly, Family #4 and #7 differ from Family #1 by having one "leg" shorter than the other. And Family # 6 has the stem on top tilted to one side compared to Family # 1.
Though they share similar appearances, they do sound different from each other. Click on the individual letters in blue (at the bottom) and listen. Let's look at some more examples. Pay special attentions to the relation ships between the Family # 1 and the rest. You should notice...