we will denote by @var{r}; @var{r} can be a letter (such as @samp{a})
or a number (such as @samp{1}); case matters, so register @samp{a} is
not the same as register @samp{A}. You can also set a register in
-non-alphanumeric characters, for instance @samp{*} or @samp{C-d}.
-Note, it's not possible to set a register in @samp{C-g} or @samp{ESC},
-because these keys are reserved for quitting (@pxref{Quitting}).
+non-alphanumeric characters, for instance @samp{C-d} by using for
+example @key{C-q} @samp{C-d}.
@findex view-register
A register can store a position, a piece of text, a rectangle, a