You can remove an unwanted file by selecting it in the
Source Files window and clicking Remove.
The files in the
Source Files window are used to generate the pages in the PDF presentation,
starting with the topmost file for the first page and progressing down
the list for subsequent pages. To change the sequence,
select a file and drag it to a new position in the Source Files
window.
Note: If you want a file to appear more than once in your
PDF presentation, select the file and click Duplicate. You can then
drag the duplicate file to the desired location in the Source Files
window.