I'm imagining a way of inserting a new row or column, where when the cursor approaches the outer vertex of a row or column (where the divider meets the outer edge), a button with a + appears allowing a new one to be inserted there.

Here's a mockup I made to demonstrate my idea: enter image description here

Are there any real-world examples of apps that do this? Additionally, what is this called?

  • Isn't it a Tooltip? – Alvaro Nov 17 '16 at 21:07
  • @Alvaro no, because it can be clicked and provides no "tip" – Ben Leggiero Nov 17 '16 at 21:31

A number of website builders use this pattern to allow users to insert content between blocks. Take SquareSpace: enter image description here


I would say it is just a button or according to Google Material a Floating action button.

enter image description here

Image source: https://material.google.com/layout/principles.html#principles-floating-action-button

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