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- Click on the respective name of the card element which causes the properties dialog to show up.
- Afterwards open the tab "Explanation Content".
- In this tab you can see:
- a text input field for the explanation title
- a text area field to enter the explanation text and
- a button with the caption "Upload Image" to add an explanation image.
- Alternatively, you can enter an image url after toggling the "Use URL" button.
The explanation title and text will be instantly saved after the input field is left. The number below the explanation text input field shows you the amount of characters you typed in already.
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