When you create a new tool it prompts you to enter "Menu Caption".
No matter what you enter, your new tool caption will be prefixed with &.
So if you enter "J&oe", you end up with "&J&oe".
If you enter "&Joe", you end up with "&&Joe".
For display, the leading "&" is removed from the name in the "Tool name" list.
It ought not prefix with "&", or it should have a little smarts about it and not add a second one and it should try to not duplicate existing ones in the build menu.
It ought not strip the leading "&" in the ToolName list, without also stripping any embedded "&". Better would be to show the names in the list with the marked letter underscored, or simply don't strip the "&" characters at all.