Open a module's process trend comparison document for two time
intervals
You must select two batches to view a trend comparison document. You
can select the batches from the graph or from the grid. In a batch comparison
document, you can select the batches from either graph or grid.
Select the batches for the time intervals for which you want to
compare module trends.
Click
Process → Trend
Comparison.
The Process History View program opens a chart with the
start and end times for the selected rows and the span from the first row and
prompts you for the module that you want to trend.
Drill down to the module and then click the
Apply Now button.