RichTextEdit controls
The BottomMargin property specifies the size in inches of the bottom margin on the printed page.
Enter the desired size in inches in the BottomMargin field of the Document tab page of the RichTextEdit control’s Properties sheet.
The BottomMargin property takes a long value. The following example sets the bottom margin of a printed page of a RichTextEdit control to 1 inch:
rte_1.BottomMargin = 1
To set the bottom margin: