You can draw detail lines to accomplish this in Systems, but there are a few things you have to do first.
First, you need to make sure you have a darker line style created, this can be done in the Settings>Linestyles menu. You can create new or change existing linestyles to suite your needs.
Second, I had a problem with the Disciplines of the views. If the discipline was set to "Mechanical" I could not edit or print any of the detail lines I drew. I was able to work around this by setting the discipline to "Coordination". That allowed me to edit the lines and plot them as well.
Hope that helps some.