You can import data from text files and other programs in the following formats.
.txt, .csv
Delimited text (text separated by tab characters, commas, or spaces)
.wks, .wk1
Lotus 1-2-3
.xls
Microsoft Excel worksheet or workbook
.xlw
Microsoft Excel version 5.0 workbook
.xlc
Microsoft Excel version 4.0 or earlier chart
