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 and PCB Library Editor, the dialog can be accessed by pressing the Tab keywhile placing a Slice Polygon Pour.
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.