Hello, I noticed that the following configuration is enabled (on the H panel) when not using `--vi-keys`:
``` BackTab (move-to-prev-xref) Move to the previous cross reference ``` But it is not there when using `--vi-keys`. Is there a way to enable BackTab (SHIFT-TAB) to move to the previous cross-reference when using `--vi-keys`? In particular, is there a way to set BackTab or SHIFT as a valid string in the `#info` section of `.infokey`? I couldn't find anything about that on the documentation (`info info infokey`). Thanks.
