Selecting large amount of holes X4

[MiechH]

For some project I have to program a drilling cycle that drills approximately 440 holes of the same diameter. The 3D model has been made in Inventor and was imported in MasterCam X4. I cannot seem to get Mastercam select all holes of the same diameter. With the option Mask Arc I select one edge of the hole, it finds 10.3 mm. Next I try to use a window to select all the holes, but it returns nothing. I don't feel like selecting all 440 manually, if you get my point.
Could someone give me a clue?

[snkdriver]

Mastercam looks for identical arcs, not just size. If the arcs are a mixture of circles and semicircles, not all will match. Try starting with a different arc. Also, until you press enter, nothing will highlight.

[cadcam]

are you selecting the arc then creates a window around the Geo and then hitting enter when you the option mask on arc?

[MiechH]

Thanks everyone, I think I've found it... Thought the option "Window Points" was meant for selecting the circles/arcs. Should've read the help better...