To SV_P, СПАСИБО! с табуляцией действительно читается !!!
Но что интересно в ArcGIS Help написано следующее:
The first row of your text file can contain the column headings. The following rows can contain coordinates and attributes. Remember to use commas or tabs to distinguish the columns. The following is an example of a comma-delimited text file:
x,y,ID,color
8.6,5.6,001,blue
99.3,77.0,002,blue and red
8.01,44.3,003,orange
This can be previewed in ArcCatalog or added as data in ArcMap and will appear as: