Tutorial - Indent feature in SolidWorks?

The indent feature creates an offset pocket or protrusion feature on a target body that exactly matches the contour of a selected tool body, using thickness and clearance values to create the feature.
Step 1:
Start Solidworks in Part Mode.
Step 2:
Front Plane>>Sketch.
Step 3:
Make a profile like this one.
Step 4:
Revolve it.
Step 5:
Now we have a revolved body.
Step 6:
In Features tab>>Reference geometry>>plane.
Step 7:
Choose Top Plane and keep the distance default 10mm.
Step 8:
Now we have a plane created.
Step 9:
Choose Plane1>>sketch.
Step 10:
Normal to View.
Step 11:
Make a circle of 30mm dia at 50mm distance.
Step 12:
Extrude it by 40mm and uncheck the merge result.
Step 13:
Choose OK. Now we have multibody part.
Step 14:
Choose Insert>>Feature>>Indent.
Step 15:
Choose the Revolve1 as target body.
Step 16:
Choose the Boss-extrude1 as the tool body region.
Step 17:
Check the cut option.
Step 18:
Choose OK. We can see in tree view that Indent feature is created.
Step 19:
Choose Boss-extrude1 and hide it.
Step 20:
We can see that an indented cut has been created for the tool.
Good tutorial !!!, clear and precise, as must be