The screenshot button works!...poorly.
I saved a screenshot today holding down the store/recall button. It saves to the Local drive instead of the USB drive.
That's extra annoying, and there doesn't appear to be any way to change the settings for it. Yes, I also checked the latest manual.
To copy the .bmp file (which should be a .png file) you have to browse to the Local drive, adjust the file types that are visible, then select and copy the .bmp file, then browse to the USB drive, and paste the file. You might also need to change the visible file types again if you want to see what's actually on the USB drive. It's very clunky.
I hope they fix this. When a USB drive is inserted, screenshots should automatically save to the USB drive instead. In general, they should improve the file browsing on these.
Thanks,
Josh