The following are the editor settings and preferences.
Object Snap:
None - Turns off all snap modes. With snap modes off, you define points by simply clicking.
Grid - Snaps cursor to the nearest grid point.
Object - Snaps to the nearest vertex on a Object. A vertex can be an endpoint of a line or line segment, corner of a polygon, or endpoint of an arc or curve.
M-Button Click for Zoom All:
If you would like to simply click the middle mouse button to zoom all, then check this option.
View Origin:
View origin symbol.
View Instances:
Show - Display all child Objects within the instance.
Outline - Display only the bounding box of the instance. Used primarily for reference and increasing redraw speed on complex designs.
View Terminals:
If checked, display terminal name as text in lower left corner of a Object. It only applies for Objects that have a terminal associated with it.
View Grid:
If checked, the grid will be display.
Display Grid (User Units):
The visible grid. Grid spacing of points in X/Y direction. The units are defined as user units - this means that a value of 1 could equal 1 micron or 1 inch, it only depends on what current units you are using.
Mouse Grid (User Units):
Grid spacing of points in X/Y direction, which the cursor will snap to when Snap to Grid is active. The units are defined as user units - this means that a value of 1 could equal 1 micron or 1 inch, it only depends on what current units you are using.
PixBox Size (Pixels):
The invisible selection box used to determine if your cursor is directly over a Object.