edit_width = number;

Specifies the width in character-width units of the edit (input) portion of the box—the actual boxed portion of the edit_box tile. Possible values are an integer or a real number. If edit_width is not specified or is zero, and the width of the tile is not fixed, the box expands to fill the available space. If edit_width is nonzero, then the box is right-justified within the space occupied by the tile. If it's necessary to stretch the tile for layout purposes, the PDB feature inserts white space between the label and the edit portion of the box.