To create an animation just replace in the math expression a number for an animation parameter.

The possible parameters are a, b, c, k, m and n.

When a parameter a is inserted in an expression, the animation starts immediately. Other parameters, nevertheless, need to be “activated”; by default, its value is 1.  To activate parameters or alter its variation intervals just right-click the drawing area and make the changes on the Parameters Panel.

The user can define edited functions' domain including in the end of expression a pair of real values between brackets separated by comma like [ a, b ]. For animations, the domain can be set in the same way.

Besides function graphics, iGraf also can draw dots, segments and  polygons.   A polygon is a collection of vertices , ordered pairs (x, y) between brackets.  Ex.: [ (x1, y1) (x2, y2) (x3, y3) ].   Dots and segments are considered special cases of polygons that have just one or two vertices respectively.