For people who have trouble with tst here ya gopretty bad
Here is an image that explains how to open a split file in a spreadsheet and save it back to a split file. The third image shows how a split file looks when everything is lined up. The first image is the file as it would be seen in a text file.
If a text editor has an option for a huge tab stop value, that would also make things line up. Another way when creating a split file is to use small placeholder split names and split file title when making the columns, then put the names in afterwards.
The format of the file is explained in the manual, which can be found here: https://itch.io/t/329672/sample-files-and-manual-update
The first column is the title, and in the following lines, the name of the splits. In the column names line, this is the display name for the split file.
The second column is the best splits. This stores as an elapsed time, not run time, the fastest elapsed time for the split. Displaying this column as run time will show the accumulated times and will show as the final split what the optimal run time should be.
The remainder of the columns except the last are for comparison splits, used to compare the current run against multiple sets of splits.
The last column is the best run. This is the splits that will be replaced when saved.
The second line for each split has additional info for the split. (Be sure to make two lines for each split)
The first column is the split's image.
The remainder of the columns are notes for that split for that column's run. So the best splits can have a note, the best run can have a separate note, and any of the comparison run can have its own note as well.
The first line's first column is the attempt counter.
The second column is the timer offset.
The third column is the background image file.
Let me know if anything else needs to be explained or clarified.