As title, I cannot find the following tool buttons in Houdini 16. They are available in 15. So where are they in 16 and how to make them show up? Thanks.

In H16 some of the utilities offered by those icons are now listed in the ‘Layout’ titled drop down menu of the Network Pane.

Although with the new features introduced with H16 I don't see the need for them, although I occasionaly use align nodes vertically/horizontaly because I don't feel like swiping with “a”.