Hi,
I found a document error in 23.1

position(from modeline): --zz-Info: (speedbar.gz)Basic Key Bindings, 76
lines --Top

`C-M-n'
`C-M-n'
     Move forwards and backwards across extended groups.  This lets you
     quickly skip over all files, directories, or other common
     sub-items at the same current depth.

this should be:

`C-M-n'
`C-M-p'
     Move forwards and backwards across extended groups.  This lets you
     quickly skip over all files, directories, or other common
     sub-items at the same current depth.