How to make drop down icon to expand groups of cells

[syedmuhammadhilmisa (Syed Muhammad Hilmi Syed Anera)]

Hi,

I was wondering if there’s any way to create a drop down icon to click that can open/close groups of cells in Mathematica.

I saw some examples of notebooks and in Wolfram documentation that has arrow at the left corner to expand the cells however I couldn’t find the option to create it anywhere.

At the moment I open/close group of cells by double click it at the right corner however, it looks very inconvenient to do so.

Thanks

[mthiel (Marco Thiel)]

Hi,

assuming that you have a couple of cells in one group (you can group cells using the Cell>Grouping>GroupCells/GroupTogether menu). Then you mark the cells and go to Format>Option Inspector>Cell Options>Display Options and tick the ShowGroupOpener box.

Alternatively, you can group the cells and click on the first one. Then you press (on a Mac) Shift+Apple+E and add ShowGroupOpenCloseIcon → True
to the end of the cell (just before the last bracket. It should look somewhat like this.

Then you click on the cell again and press Shift+Apple+E once more.

Cheers,

Marco