3D Modeling - Learn OpenGL ES: For Mobile Game and Graphics Development - page 140

Note In place of transforming objects using buttons, listed under
the "Object-Tools" panel ( Figure 4-9 ), you can also use shortcut
keys. Table 4-1 contains a list of commonly used shortcut keys in
Blender.
To rotate highlighted objects ( Figure 4-15 ), press the R key to enable rotation and,
as you did previously, press another key ( X , Y , or Z ) corresponding to the axis about
which you want to rotate the objects. To render image, as shown in Figure 4-16 , press
F12 .
Figure 4-15 . Rotating multiple objects