As reference data I find e-readers are hard to beat. I've got my entire library of No Starch books on my iPad and it beats trying to find some obscure command o

As reference data I find e-readers are hard to beat. I've got my entire library of No Starch books on my iPad and it beats trying to find some obscure command on the Internet. It also wins when I'm "off grid" and don't have access to the Internet. I also use a ReMarkable 2 with PDFs of data sheets for reference material as well. When doing embedded programming its like having a third screen dedicated to holding the page in the datasheet that describes all of the register bits.