Not hard to do. HotRod was indeed extremely involved with updates, and additions, to the calculator. Occasionally, the Help file got overlooked. (the Presets tab being one of them) The long text ("What's new") is a list (as they were created) of all the updates. Here are the pertinent snippets, so you don't have to go looking again: Really, it is just a convenience feature. We'll be here! HotRod did spend a ton of time; both writing the software, and here actively involved with this thread. He, as I understand, is a professional software developer. And, finally, work responsibilities, as well as hand surgery took him away from us. He has been AWOL for the last 2 years. The rest of us try to keep this thread alive. It is still a great resource. Generally speaking, when I run into a problem with the calculator, I do the following: first, I check the Help file. Second, I search this thread. Then, if I still haven't figured it out, I'll post a question in this thread. In case you haven't figured out ECF's search function; here is a quick tutorial: The search box can be found in the upper right hand corner of every ECF page: Clicking on the search bar will cause it to expand: #1. This is where you type the terms you wish to search for. It is case sensitive... lower case search entries will find both lower AND upper case results. Upper case searches will only provide upper case results. This field is optional; if you are a certain member's posts) #2. This is where you can search for specific ECF member's replies (leave blank if you want all results). As you begin to type; you will see a drop-down open with suggestions (minimum of 3 characters required). You can continue to type, or click on one of the suggestions to auto-fill. This field will accept multiple members. #3. This is another optional field. It applies date limiters. Clicking on the field will open a calendar. Click on the date of the earliest date desired. #4 Check this box if you wish to restrict the search to the current thread. Example: if I wanted to search this thread only, for previous mentions of "presets," I would check this box: That way, my search results are not polluted, by results that have nothing to do with the calculator. #5. Is similar to #4; but limits the search to the current forum, instead of just the thread. (e.g. this thread is located in the DIY E-Liquid forum)(Note: unchecking both will search the entire contents of ECF) #6. I have to confess; I don't see what this is supposed to do. I have tried doing the same search, with the box both checked and unchecked, and I can tell no difference. I ignore this one. #7. This begins the search. #8. This opens the advanced search options.