1. Group Combine several objects as a group Create a group: Multi-select the objects in navigator using click+Ctrl -> press down the right mouse key to select Group

2. Create a Curve Using an Equation in Cartesian Coordinates To create a curve: Click on Curve -> Select From Equation -> Done -> Select a coordinate system (e.g. select DEFAULT_CSYS) -> Select Cartesian -> Write down the equation in the pop out window -> File -> Save -> Exit ->OK Note: Variable t = 0 ~ 1, x, y & z needs to be defined, for example: x=4*cos(t*(5*360)), y=4*sin(t*(5*360)), z=10*t

3. Create a Curve Using an Equation in Cylindrical Coordinates To create a curve: Click on Curve -> Select From Equation -> Done -> Select a coordinate system (e.g. select DEFAULT_CSYS) -> Select Cylindrical -> Write down the equation in the pop out window -> File -> Save -> Exit ->OK Note: Variable t = 0 ~ 1, r, theta & z needs to be defined, for example: r=t, theta=10+t*(20*360), z=3*t

4. Create a Curve Using an Equation in Spherical Coordinates To create a curve: Click on Curve -> Select From Equation -> Done -> Select a coordinate system (e.g. select DEFAULT_CSYS) -> Select Spherical -> Write down the equation in the pop out window -> File -> Save -> Exit ->OK Note: Variable t = 0 ~ 1, rho, theta & phi needs to be defined, for example: rho=4, theta=t*180, phi=t*360*20

5. Relations To create a relation: Click Tools -> Select Relations -> Write down/Edit/Remove a relation in the pop out window ->OK -> To see the dimension change, click on Regenerate To find the name of each dimension: Info -> Switch dimensions Note: Also you can create a relation by double click on the dimension

6. Butterfly Spring Equation in cylindrical coordinats ： r = 5 theta = t*3600 z =(sin(3.5*theta-90))+24*t

7. Leave Curve Equation in Cartesian coordinates ： a=10 x=3*a*t/(1+(t^3)) y=3*a*(t^2)/(1+(t^3))

8. Helical Curve Equation in cylindrical coordinates: r=t theta=10+t*(20*360) z=t*3

9. Helical Curve Equation in Cartesian coordinates ： x = 4 * cos ( t *(5*360)) y = 4 * sin ( t *(5*360)) z = 10*t

10. Spherical Helical Curve Equation in spherical coordinates: rho=4 theta=t*180 phi=t*360*20