This dialog allows the designer to change the width of the line currently being placed, and/or the current layer for placement.
From the PCB Editor, or PCB Library Editor, the dialog can only be accessed by pressing the Tab key while in line placement mode.
Line Width - use this field to enter a new width for the line. This new width will be applied to the segment currently being placed.
Current Layer - use this field to switch the layer on which the line is placed. The drop-down menu lists all currently defined (and enabled) layers for the board. The chosen layer will apply to the look-ahead segment of line, that is, the segment after the one currently being placed.