@sakis_s
If you could post an excerpt of your text file instead of a screenshot, we might be able to find a simple way to do this in your current version.
I definitely would encourage you to upgrade, as SE has continued to add a lot of useful features recently.
I created what I think is a representative example of your input data and found that this procedure seems to do what you want to do:
- Block select the column containing the '00010101' data that you want sorted to the top (right-click and drag the mouse or press Ctrl-B and use the arrow keys to select only the column containing the '00010101' values).
- Replace ' ' (space) with '9' (Ctrl-H)
- Tools>Sort...
- Click the Sort on Selection, Ascending, and Numeric Sort options. This should put the '00010101' rows at the top
- Replace (Ctrl-H) '9999999' with ' ' (seven spaces).[\li]
This should work unless your data actually has seven nines '9999999' in the real data.
I hope this helps.