Bill:
Have you tried to create a group of stocks to test against using maintenance? At the risk of telling you what you already know, try this (I'm assuming that you have a basic collection of stocks in a group that you download already):
1. At the home screen, click on Securities and then on Maintenance. (If you have a chart already open, click on Security Maintenance button or the Security drop down menu then Maintenance.) In the bottom right corner, find and click on the Edit Groups button. On the next screen, click on the New Group button at the top. Name your new group System test ( or Rover or whatever ). Click OK, then select your new group to be displayed, select the securities you want to include in the group, click Save and then close. When you next wish to run your system scan, select your new group as the group of securities to scan. Make certain that you tell the scan to mark all the securities in the group. Output the results of your scan to another group that your can create in the same fashion as you created the first. When I'm creating a group that I know will be the population of a special scan, I always create a group coded to that scan at the same time. Thus, a scan that looks for alerts based on Jeff Cooper's 180 send its results to a group named ALERT: 180.
Don't know if this is what you were looking for, as I rarely run a scan of a system against a group of stocks for anything more than the most recent buy or sell signal. If you want to back test against a group, you can do a Scan as I've described above with the days/periods set to 180 or 360 at the Scan Options tab and no check mark in the Report only Last Signal box at the Output tab. Hope you've got a lot of RAM and time tho if you are scanning more that a couple of stocks. Good luck - let us know if this works out.
Peace and Justice --- Patrick
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