Help buffers provide the same commands as View mode. A few special commands are also provided:
help-followfollow a cross-reference at point
forward-buttonmove point forward to the next hyperlink
backward-buttonmove point back to the previous hyperlink
help-follow-symbolshow all documentation about the symbol at point
help-go-forwardgo forward to the next help topic
help-go-backgot back to the previous help topic