How do I quickly add constraints in the CATIA sketcher?

It is possible to add constraints quickly in CATIA.
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Step 1:
Draw a simple sketch as shown below.
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Step 2:
In the Constraints toolbar search for Auto Constraints.
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Step 3:
Select complete sketch by dragging the cursor.
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Step 4:
Now click on Auto Constraints. A dialog box will appear. It will ask for references. Give proper horizontal and vertical references. And click OK.
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Step 5:
Your sketch will be automatically constrained.