Introducing AutoCAD2013
Coordinates in status bar InfoCenter Quick Access toolbar Pick box Coordinates in status bar UGS icon Command palette
Coordinates in status bar Infer constraints Grid display Ortho mode Polar tracking 2D Object snap Object snap tracking
Coordinates in status bar Infer constraints: The express constraints that you use. Ortho mode: In this mode ,You can only draw perpendicular line or horizontal. Polar tracking : The Polar tracking can find angle that you want. Object snap tracking: Tracking geometric relationships that you select. 2D Object snap: That will catch corner of Contour lines on 2D environment.
Object snap Setting symbols that you need . If you select all , drawing area will be very messy . That is not easy for your working.
Polar tracking Sets the polar increment angle used to display polar tracking alignment paths. You can enter any angle, or select a common angle of 90, 45, 30, 22.5, 18, 15, 10, or 5 degrees from the list.
Offset/Trim Trims objects to meet the edges of other object. Creates concentric circle,parallel lines,and parallel curves. Trims objects to meet the edges of other object. trim tool offset tool Input distance that you wanted offset. Chance direction Enter Chance useless line
Tangent and Tangent and Tangent. Circle Center and Radius. Center and Diameter. 2-Point. 3-Point. 2-Tangent and Radius. Tangent and Tangent and Tangent. Create circle by