Google Colab - Toggle to Hide/Unhide cells - toggle

In Google Colab - how do I hide/unhide cells under a section or subsection

There's a triangle in front of each heading.
If you click at that triangle, it will toggle between show and hide.

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How to drag / re-center the displayed Tableau worksheet?

Suppose I wish to focus on the state of Colorado in the following chloropeth map:
The typical mechanism is to use the operating-system dependent means of dragging the picture. I am on OS/X so that involves using two fingers to drag the image to the desired new centering location.
However the actual result of that operation is a bounding box is displayed on the image (I can not get a screenshot of it since it disappears)
So then .. how to drag /re-center the Tableau display?
Click onto the small 'play' arrow button on the chart menu in the top left hand corner. A sub menu will pop up where you can select the scroll method you'd like - click and drag is one of these. You can also disable this through the chart options (the small drop down menu on the top right hand corner of the chart).

How to put a title onto Tableau Chart after it was removed

As shown in the screenshot the title Price vs Distance to Work Hubs was unintentionally displaced from the chart to .. off the chart .. So how can it be put back on the chart? Drag/drop does not work..
Drag your title between rows line and starting of worksheet as :
Click on Worksheet
Go to Show Cards
Click on Reset Cards
Here is a workaround that I found:
Right click on the title area and select Hide
On main menu: Worksheet and then select Show title :
Here is an another approach for the same:
1.Right click on the area where Pages Shelf, Filter Shelf and Marks are appeared.
2.A menu appears, Click on Reset Cards

Mapbox toggle layers > double click required to hide layer?

I have followed the mapbox toggle layers demo (https://www.mapbox.com/mapbox-gl-js/example/toggle-layers/) on my map project.
In order to turn a layer 'off', I need to click twice on the actual button - once to select, and then a second time to actually hide the layer.
The demo map only requires a single click to show/hide layers.
How can I fix this?
My map is at: https://qlddogs.com.au/maptest2.html

Repeatbox row label not visible until clicked

I am using this youtube link as a guide
When my repeatbox loads, I see three empty row. When I click on the row, the text of the label becomes visible. When I click on a different row, then only the new label is visible.
Has anyone encountered this before? Is there a recommended font size or row height I should be using?
Can you try the following chances,
1. Changing background/font color of the label?
2. Un-check "Enable pull-down to Refresh" & "Enable pull-up to Refresh" options in "Palette". - This is to make confirm that having an issue in repeaterbox rendering rows.
Select "Inactive Item" from "RepeaterBox Edit Mode" from Pallete window. Then add your controls like label, etc.,
You might be added the controls in Active mode. That is why, controls are not visible till you selected.
For more info: http://www.smartface.io/developer/guides/controls/repeatbox/

Unity Editor script with multiple levels of selectable toolbars

I've created an editor script that shows a toolbar of different buttons along the top, the view changes depending on which toolbar button is selected. I'm currently using this line:
toolIndex = GUILayout.Toolbar (toolIndex, parsedTools, EditorStyles.toolbarButton );
but there are too many options that scroll off screen. How can I set it so it shows 10 buttons then shows the next 10 buttons underneath those, rather than all in one single line?
Ah, I think GUILayout.SelectionGrid is what I am looking for…