This option is available when creating a document using TigerDesigner.
For experienced designers, there is the option to start entirely from scratch and build a design from a blank canvas using the tools available in TigerDesigner.
To create a Blank Design:
Select Create Document
Select the Fully Editable tab
Select the Blank Design button
From here you can choose where to save your document and select the page size. Selecting custom size from the Page Size drop-down list will prompt you to enter the width and height of the document.
Once the document has been created you can begin designing it by adding panels (from the panel palette). The formatting of a panel, for example, a button, can be controlled using the Settings palette.