NoteTaker is more powerful than all other outline programs I've used. I'm thrilled to have the recent update! Its primary strength is its ability to combine multiple outlines in one notebook, in one file. Multiple related but distinct projects can thus be combined, between which notes and attachments can be moved or copied. With its over 20 (!) commands for navigating about each page—not just from entry to entry but from section to section—one can quickly get a sense of the various layers of the project(s) one is outlining. For myself, being a researcher, this is exceptionally valuable. Other inestimable features are automatic date/time stamping and being able to see, and organize, by such time/date stamps, and the means to mark an entry as an "action" or "priority" item, by which one can again sort entries. And being able to highlight entries and group those that have been highlighted. And the index of all terms used. And the word count not just for the whole document but for any section, page, or selection. And the ability to delimit what is printed or converted to PDF. And, and, and. Is there any other program out there that can do all this, for this price, without the threat of invasive data-mining or an on-going fee? If so, I haven't found it. The developers are working to refine it but the program is, for my purposes and money, the best on the market. I'm very glad 4.0 is here!