Вот выдержка из Хелпа Interface and Tools>Interface - Commands and Tools>Setting Values for Parameters:
value
Sets all selected element properties to that value. For example, entering an X-axis rotation value of 5 sets all selected objects’ rotational values to 5. This is also known as absolute input (see the following illustration).
value+
Increments all the selected elements by that value. For example, entering 2+ in an X-axis translation parameter shifts all selected objects by 2 Softimage units. Math operations are known as relative input.
value-
Decrements all the selected elements by that value.
value*
Multiplies all the selected elements by that value.
value/
Divides all the selected elements by that value.
l or L(min, max)
Creates a linear range through the selection, according to the original selection order. For example, L(4,8) when applied to the X-axis translation parameter of a group of three cubes causes each object to move 4, 6, and 8 Softimage units along the X axis, respectively.
r or R
Creates a random value for each selected element, between 0 and 1.
r(x) or r(-x)
Creates a random value for each selected element between 0 and the value for (x). If r is followed by (–x), a random value between 0 and the negative value is inserted.
r(min, max)
Creates a random value for each selected element within the specified range.
g(mean, var)
Creates a random value following a normal distribution among the selected elements.