Lines : How to "Gridify"?
I was watching this video on YouTube (7) Master the Gridify Feature in InDesign - YouTube
At about 3 minutes, he demonstrated a technique I had no clue existed, in which a line can be interasctively duplicated while holding the Alt + Shift keys. The following Is a screen capture of my result: the red lines show the starting and finishing lines, while the intermediate black lines shows the lines created interactively using the "Gridify" feature. I made the lines thicker to facilitate following:

Now, for the life of me, I can't find how to control the initial spacing between the lines?
I also wonder how is it that when I select ALL the lines and pull them down from the bottom, the spacing between the lines "increase"? Having a difficult time wrapping my head around this behavior.
