Problem solved, it WAS the extended keyboard setting.

It appears that when I changed keyboard setting to UK English from UK
English Extended, it didn't "stick", (i should have re-booted).

Removed all other installed services (including U.S.) from Control
PanelRegional SettingsLanguagesDetailsSettings (and re-booted).

The toggle worked fine.

Tried once more adding and selecting extended keyboard and it didn't work,
so removed it again and all OK.


"Smirnoff" wrote:

For some reason the keyboard shortcut (Ctrl+`) does not toggle show/hide
functions.

Selecting ToolsFormula AuditingFormula Auditing mode works fine, so I
cannot figure out why the key combination doesn't work as well.

I have changed regional (keyboard) settings from UK English Extended to just
UK keyboard to see if it made any difference, it didn't.

I know the `(grave) key works and have tried it with both Ctrl keys with no
luck.

Help please.