Hi Lee.
I’m speculating, but the most likely reason ”Why” the slash (forward or backward) symbols aren’t available is because they’re used internally as delimiters in file names. They separate folder and sub-folder names for the various operating systems that computers use (DOS, Windows, Mac, Unix, Linux etc) and Yamaha has made their file structure compatible so we can manipulate the files on our flash drives using our various computers. Not much consolation I agree, but at least knowing why helps me in most cases.
My favourite work around is to use the underscore, so I’d (reluctantly) be naming the registration Piano_E.Piano. Not the best, I agree, but at least tolerable.
Oh, and to add to Chris’s tip about making the various other characters work to your advantage, he left out the @ symbol, which is my favourite to use occasionally as the first character in either a file name, or even a folder name. It like the others he mentioned contains a lower internal character value (used when computers sort things) than letters and numbers too. I use this to my advantage like this. I have many folders and sub-folders on my flash drive, all names alphabetically in a meaningful way to me. But then, when I sit down to play my Genos, I also have a “folder” called “@My Repertoire”. Because it has the @ symbol, it’s always the first one in the list on Page 1 of the Genos file selectors screen, so it’s easy to find. You can use this trick naming folders and even folders within folders as well as for file names, and it helps keep things super-organized for OCD types like me, and rapidly accessible as well. Just thought I’d pass that along.
Hope this helps…
Gary