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Structure Designer
The Structure Designer
is used to define structures outlines.
It is invoked by the New button on the
Structure Selection dialog or by the Edit menu. 
The dialog is similar to the Line Drawing dialog.
The Mode Radio box which selects the type of operation to perform:
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Lines are created by dragging on the drawing area.
Shift-Left-Drag will use the End-Point of the previous line as the starting
point to create connected line segments.
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Arcs are created in the same manner as curved tracks.
First select the beginning of the arc and drag to specify the beginning angle.
Release and drag again to place the end of the arc.
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Circles are created by selecting the center position and dragging to specify the radius.
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Boxes are created by selecting one corner and dragging the opposite corner.
A box is composed of four lines which may be individually deleted.
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Poly Lines are created by Left-Dragging, and a corner is placed when you release the Left mouse button. The Poly Line is finished by a Right-Click or by selecting another operation.
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Filled Circles are created like Circles.
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Filled Boxes are created like Boxes.
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Polygons are created like Poly Lines.
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Above moves the clicked-on object to the top of the drawing order.
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Below moves the clicked-on object to the bottom of the drawing order.
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Delete allows you to delete lines and arcs.
Note: Boxes are treated as 4 separate lines for Delete.
The Spacing and Division controls enable the snap-grid. If Division is non-zero then the End-Points of lines and arcs are constrained to be on the grid.
Manufacturer, Description and Part Number (#) comprise the Title of the structure.
These values are used in the Structure Selection dialog and the parts list.
Import is used to import an existing structure or turnout.
The structure or turnout can be modified and then saved.
This is useful for adding details to sectional track.
A series of buttons allow you to pan the drawing area (Right, Left, Up and Down),
Zoom In and Out and to Undo the last drawing command.
The scale of the drawing area is indicated after these buttons.
The Ok button completes the design.
The new structure is added to the list in the Structure Selection dialog.
The Structure data is saved in the xtrkcad.cus file for the next time
you use XTrkCad.
Please consider contributing this information for others to use.
You can change the Parameters or Title of existing designs by using the Custom Management dialog.
The Cancel button removes the Structure Designer dialog.
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