Nematron Pointe Controller - Manual (Page 69)

Pointe Controller User Guide Chapter 3: Quickstart Project
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When you do this, an alert window will pop up on your screen, warning
you that stopping the flow of a running program could cause problems (if
you were actually controlling a machine) and asking you to verify that
you do in fact want to insert the break point.
4. Click Yes. A break point will be set on the selected block.
In a project as small as this (a single small flow chart), the executing program
should hit the break point almost immediately. Note the pink rectangle around
the block and the red diamond on the left side of the block. The pink rectangle