The top row of keys was specifically chosen because of the Alt-1 thru Alt-9 instant magnification settings, which are on the top row of the keyboard. The Magnifier is specifically is looking for those physical keys on the top row, not the simply the characters - / +. It comes down to what The Magnifier is looking for - it is not looking at characters, it is looking at the VK_OEM_PLUS & VK_OEM_MINUS keys (Virtual Keys as handled by a normal keyboard which is handled internally by Windows). In other words, the supported keys are the top row keys, not any + or - keys.
You can use Alt-M to open the custom magnification dialog, and select your desired magnification, or use the keys supported by The Magnifier.
The whole issue of hot-keys raises many issues, including compatibility with other software (i.e. conflicts when different programs use the same hot-key combination), user customization, etc., etc. The Magnifier uses hot-keys in a straightforward manner - these are the hot keys, you have 3 options (Alt, Alt-Shift, or Ctrl-Shift), and that is it. There are multiple ways to control the magnification, as outlined above, and through the menu.
|Category: Using||Type: Question/Answer||Product: The Magnifier||Version: 1.50|