I need to draw one graph using OriginPro 7.5 for 25 kinds of data. After I pressed File/New, a nwe datasheet will appear. These 25 kinds of data will occupy 25 columns in this datasheet. But it seems that only 17 columns can be seen although the other 8 columns do exit in the datasheet. I can not edit the data in these 8 columns if I can not see them. Is there any way to see them if I have more than 17 columns of data? I appreciate your answer. Thanks a lot! Tony