The lack of the 'Range contains column labels'-checkbox from the main 'Data
Sort'-Dialog is one of the most annoying issues in Calc.

Whenever one wishes to tag the first row as 'column labels' or to remove this
tag,  one is forced to enter the 'Options'-Tab and make the necessary changes.

This takes a lot of time when one tries to do things fast and is very annoying.
The fact is that the dialog size is big enough to enable having this useful
option in the main dialog.

Therefore, I propose to move the relevant checkbox from the 'Option'-pane of the
dialog to the main pane. I will attach an image of the dialog as it is currently
designed and another image of how I envisage it being done.

Please note that there is still plenty of unused space, so the dialog could
easily be sized down a little bit.