1. Create an offset plane: select an existing plane,and enter an offset value.
2. Create a parallel plane through a point: select an existing plane and point .The resulting plane is parallel to the reference plane and passes through the point.
3. Create a plane at an angle : select an existing plane and rotation axis ,then enter an angle value
4. Create a plane through three point: select any three point
5. Create a plane through two lines: select two lines
6. Create a plane through a point and line: select any point and line
7. Create a plane through a planer curve : select any planar curve
8. Create a plane normal to a curve: select any curve and point
9. Create a plane based on it's equation: key in the values for the Ax+Bu+Cz=D equation.
10. Create a mean plane through several points: select any three ,or more points

1) Create lines between two points : Select two points

2)Create lines based on a point and direction : Select a point and a line ,then specify the start and end point of the line.

3)Create lines at an angle or normal to a curve : Select a curve and its support, a point on the curve,then speify the angle value ,the start and end points of the line.

4)create lines tangent to a curve : Select a curve and reference point,then specify the start and end point of the line.

5)Create lines normal to a surface : Select a surface and refrence point,then specify the start and end ponits of the line.

6)Create lines normal to a surface : Select a surface and a reference point ,then specify the start and end points of the line.

Modifying Unit :
Tools>options>Units from the menu bar .
You can set the units for length,angle,time,mass and so on,using the option in the unit dialogue box.

Modifying the grid setting :
Tools>options>mechanical design> sketcher from the menu bar.
You can change the value of graduation and primary spacing.The spacing between two dotted line is called graduation ,while the spacing between the two continuous black line is called primary spacing.