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Before the polygon is started the line width and color can be set. The PolyGon Line Width field is a scaled dimension in inches if >0. If 0 it is a 1 pixel wide line at all zooms. If the value is negative, it is a scale-independent number of pixels wide.
Polygons are created by either a series for Left-Click
s or Left+Drag
s, and a new "node" is placed for each. When using Left-drag
, the node will be positioned when you release the button.
Alt
is held.
Ctrl
is held down when a new point is placed, it will snap the relative angle of the new side to a multiple of 90 degrees from the previous side. On the first polygon side this will be at a multiple of 90 degrees to the axes. The line from the previous point will be highlighted in Blue.
Enter
or Space
. The polygon will be auto-closed.