org-next-block
org-next-block is an interactive compiled Lisp function in `org.el
'.
(org-next-block ARG &optional BACKWARD BLOCK-REGEXP)
Jump to the next block.
With a prefix argument ARG, jump forward ARG many source blocks.
When BACKWARD is non-nil, jump to the previous block.
When BLOCK-REGEXP is non-nil, use this regexp to find blocks.