To set the image properties, click on the "Image properties" icon.
A form will appear. Click on the tab "Basic settings" and set Width and Content alignment.
Click on the tab "Appearance" and set the Border width and Border style and choose the Mode of the border.
Then set the Border radius and choose the Border color.
To set a link on a picture, click on the "Link" icon.
Select the type of URL protocol and insert the desired landing page URL address.
Alt text is the text that will be displayed in a case when the picture can not be loaded (slow connection, image blocking, etc.). This text should briefly describe the picture. Click on the "Alt text" icon.
Fill the "Alt text" field with the desired alternative text.
When everything is set, click on the "Confirm" button.