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Let's create a line corresponding to the undeformed neutral axis. Click once on the Sketching tab, , which appears at the bottom of the Tree Outline. Click once on the Line button, , in the Draw tab, , that automatically appears. Then place the mouse cursor directly over the origin of the XY plane until a P appears (the P indicates that the cursor is co-incident with the Point at the origin). If you don't see the P, you need to turn on the Auto Constraint feature as shown here. This step is necessary in version 15.0 as noted at the top of this page. In older other versions, the Auto Constraint feature is turned on by default. 


Once the P appears then click once on the mouse. Next, move the mouse over to the right so it lies somewhere on the positive x axis; Prior, to clicking again make sure that a C appears (the C indicates that the cursor is Co-incident with the horizontal axis)..


You should now have a line that starts at the origin and terminates somewhere on the positive axis.

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