1) Affixed to this 2) After this 3) At once 4) At this place 5) From this point forward 6) Immediately after this 7) Immediately afterward 8) Immediately following 9) Immediately following this 10) Right after this 11) Right after this, legally 12) This point forward 13) Upon this 
• (adv.) On or upon this; hereupon.
Here·on' adverb On or upon this; hereupon.