You can insert new placeholders by clicking the corresponding buttons in the "Placeholder" tab. Placeholders are created with the help of XSL Transformations and JavaScript.
For example the tag "<xsl:value-of select="firstname"/>" will be replaced with the element "firstname" of the selected item in the JavaScript array "sampleData".
Also note that there are areas that can not be edited. Those are defined as read-only.
For example it is not possible to change the address of "FastInternet GmbH". Use the CSS property "-ro-editable: false;" to prohibit editing of the corresponding HTML tag.
For more information about this you can read chapter "Restricted Editing" in the manual.
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