\version "2.2.0"
\header {

    texidoc = "Kneed beams (often happens with cross-staff beams)
should look good when there are multiple beams: all the beams should
go on continuously at the staff change. Stems in both staves reach up
to the last beam.
"
}

\score { \notes
	 \context PianoStaff \relative c' <<
	     \context Staff = SA {
		 \stemDown
		  c8[ c16 \change Staff = SB \stemUp c16 ]
		 \stemBoth
		  f[ g \change Staff = SA a c] 
			       }
	     \context Staff = SB \relative c' {
\clef bass
		  b8[ b16 \stemUp b,,16 ]

		 g'4\rest
		  b,8[ b16 \stemDown b''16 b ]
	     }	     
	     
	     >>
    \paper { raggedright= ##t }

}
