We enter:

```
<PARAM name=function1 value="x^3-3*p*x;p=-2,-1,0,1,2">
```

```
```

Click here to view this example.

```
<PARAM name=function1 value="a*x+b;a=-2,-1,1,2;b=-2,0,2">
```

```
```

GraphApplet calculates all possible combinations of a and b (4*3=12) and plots the aasociated line.

Click here to view this example.

```
<PARAM name=function1 value="user:line;a=-2,-1,1,2;b=-2,0,2">
```

```
```

The values of a and b are now presented to a precompiled user function, so string evaluation need not be done every time again

Click here to view this example.

A full discussion of the user option can be found at Faster Plotting.