Clip Mask

To clarify - you have a reference attachment. You would like to mask (hide) part of the attachment, but in the middle of the masked portion, you would like a "window" to show a portion of the reference?

I don't think that can be done. I've never found a way to do it. Whenever I've needed that, I either do some VERY creative shapes for my mask fence, or I just create a secondary copy of the attachment, clipped to just that part I need to show within the mask. I have never found a way to punch a hole in the mask.

Opps I was wrong.  Looked back at the file this morning and the clipping did not happened as I thought.  Guess I will have to be "VERY" creative.

Thanks for replying too.

I need to clip a reference file, with areas outside and inside that remain.  The image shows the area to clip in a blue outline, with X's for the inside areas to remain.

Create a filled shape using the background color over anything you want to clip out. You can use Priority settings on levels, reference files or elements in a 2d file to put the filled shape on top of everything. In a 3d file you will need to adjust the elevation of the filled shape to be above anything to be clipped.

Great idea.  Thank you.  I might learn MicroStation yet with help.

The colored shapes above are reference to a sheet model. I then placed the rectangle and the circle in the sheet model. Using the Create Region tool I used the following settings.

I think this may give you what you desire.

thats just the way I do this stuff all the time... Eg. dont want to show existing contours crossing over into the proposed road design...and make it hard to see the proposed road design...but want a feel for the lay of the surrounding land ...

thats just the way I do this stuff all the time... Eg. dont want to show existing contours crossing over into the proposed road design...and make it hard to see the proposed road design...but want a feel for the lay of the surrounding land ...