There is no dark arts with this. Each line is two shapes overlaid by two text boxes. You can click on any of these to resize or edit text. You can also click and then shift click to select all four and drag them to reduce/increase the space from the item above or below.

To add more, just select a group and then hold the control key as you drag to make a duplicate copy.

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Andrew Lockton
Chrysalis Design, Melbourne Australia