Dear All, An overwhelming response to my masks problem has given two main options: The true masking solution: In a new layer (or cosmetic) draw a polygon over the area you wish to view, (you may already have a polygon!) then draw a bigger one over the area you wish to mask. Select the larger area and... Objects - set target on the larger area. select the smaller area using ctrl + left mouse click then... Objects - erase. That will give you a single polygon with a hole in the middle the shape of your original polygon. Then save this doughnut polygon to a separate layer and move it on top of everything else thus masking external data and letting what you wish to see shine through!! The Clipping version: Select the polygon you have e.g. a district boundary with LandLine data overlaid. Select the district polygon: Map > Clip Region, this will clip all of the surrounding data and show only that which falls within the polygon. N.B. - Apparently this is only a display function, you are not actually permanently clipping all your data... Thanks again everyone who replied! The solutions solved my problem, good luck to those who inquired for their own purposes!! _________________________________________________________ David A. Eagle (Graduate Analyst). WS Atkins Consultants - East Anglia Wellbrook Court, Girton Road, Cambridge, CB3 0NA. Tel: (01223) 276002, E-Mail: [EMAIL PROTECTED] ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
