1. You can create content through Content Blocks module - there is no problem with this.
2. To show this content you need to use ContentBlock control - it has a selector which you can use to select shared content that will appear inside the content area of the ContentBlock control
3. ContentBlock is a public control which has an option that allows you to create a new shared content which is equivalent to creating this item from Content Blocks module.
the Telerik team
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