report item allows developers to insert HTML-formatted text into a report. You can specify the HTML value at design time (either through a WYSIWYG editor or through an expression editor), or retrieve it from a data source using any simple or complex expression that evaluates to correctly formatted HTML.
In order to create placeholders we can suggest you to use embedded expressions inside the HtmlTextBox. For more information, please refer to the Embedded Expressions
Please note that the HtmlTextBox item works with text formatting options only. The list of supported HTML tags and CSS attributes can be found here
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