While using the "Organize Pages" feature, there needs to be a "select all" pages function. Ironically, there's a "deselect all" function if I accidentally click in any of the white space between the pages I'm working through, completely ruining the progress I've made. The reason is because I often work with PDF files consisting of 50+ pages. I have to split those pages into at least two different PDF's but only certain pages. So, I often have to select to delete 48 pages when I only need 2 for one file and 48 for the other. If I accidentally click anything that isn't the specific select check box then everything I just spent tedious time selecting is now unselected and I have to select everything again. Please add a select all function. Thank you.