> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # Adding, Editing, and Deleting Form Elements > Plan the order for adding form elements in ABBYY FormDesigner — set margins, place anchors, then add fields — with links to each element type. Once a new form has been created, you can add elements to the form and edit them. Be sure to discuss the form design and contents with your customers before adding elements to the form. Recommended order for adding elements to the form: 1. Setting margins 2. Adding *reference marks (anchors)* 3. Adding other form elements For a form to be machine-readable it must have margins along each of its four sides. The default margin width is 10 mm. You can change the default width in the **Page Properties** dialog box (**Form →** **Page Properties...** **→** **Size**). The margins are shown as dashed lines on the screen. If you want the margins to be displayed on the form, select the **Show margins** item on the **View** tab of the **Options** dialog box (**Tools →** **Options...**). You can specify the properties for every element. ## Related topics