Incremental leading

"There has been a lot said recently about Vertical Rhythm. Richard Rutter began the work on 24ways last year with the piece ‘Compose to a Vertical Rhythm\'. This was built upon by Wilson Minor on A List Apart recently with his article on Baseline Grids. All sound typographic advice... At @media this year, I presented ‘Five Simple Steps to Better Typography\'. Step two in my presentation was was Vertical Rhythm where I reiterated some of the excellent points Richard made in his article and also the presentation we both gave in at SXSW in March. I also added something of my own: Incremental leading, or Incremental line-height."