Add Expander

This allows the addition of a new expander, to the list of expanders.

• Expansion Label: This is the label you insert in your stencil. You can think of the Expansion Label as a variable name.

• Expander Type: The Expander Types help you configure the data type of the expander.  
• Display Name: This is responsible for displaying the name of the expander. 
• Description: This allows additional texts to explain in detail, the Expander's functionality.