What do you mean by "ascii file"?
Do you mean a xyz file like :
307129.68519212 7676731.03382066 315.00000000
310789.38774212 7676773.11982190 66.10000000
If yes, you have to change the extension of your file by ".xyz"
Example :
old file : mydata.txt
new file : mydata.xyz
Then open BlueKenue, and choose "
File"->"
Open" then select "
Points Sets (*.pt2, *.xyz, *.pcl)" and finally open your file.
After that you just have to click and drag your layout in "
Data Items" to a view that you selected (default : "
2D View").