Chapter 8 simpleshape tutorial

For the tutorial found on:
http://www.garagegames.com/docs/torque/general/ch08s03.php

Which gives this set of instructions:
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Procedure 8.8. Creating Collision Details for Simple Shape

Open SimpleShape3.max located in the documentation file pack.

Clone one of the detail markers and name it "Collision-1"

Tip
You could also create the collision marker by adding a new dummy object to the scene and naming it "Collision-1", then linking it to "base01".

Make a copy Clone of SimpleShape 128 and change the segments to 6. Name this mesh'Col-1'.
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What is a "detail marker" and how do I add a new dummy object to the scene?

Also under Creating Sequence Objects, it saids "see the section on the Sequence Object Parameters????) ... where can I find that section? And would I locate the menu that is shown in Figure ? (directly under the creating sequence objects section)

Thanks!