How to show Low/High Points of a Surface (dtm)

Two workflows come to mind:

1. You could display all the points and then change the display depth in MicroStation to your desired range.  For example, if you want to only display points between elevations 200 and 250, you would type in the MicroStation keyin "DP=200,250".
2. The other method would be to use a Feature Filter to display only points within a certain elevation range.  If you are not familiar with Feature Filters, you will find the following video very helpful:
   
   http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/2418.aspx

Two workflows come to mind:

1. You could display all the points and then change the display depth in MicroStation to your desired range.  For example, if you want to only display points between elevations 200 and 250, you would type in the MicroStation keyin "DP=200,250".
2. The other method would be to use a Feature Filter to display only points within a certain elevation range.  If you are not familiar with Feature Filters, you will find the following video very helpful:
   
   http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/2418.aspx

Thanks Jacqueln for your reply...

i actually wanted to view the lowest and highest points on that surface....