Using the Lock Fill modifier

Locking a gradient or bitmap image creates the effect of scaling a gradient or bitmap as if it filled the entire Stage and that the shapes it fills are masks revealing the underlying gradient or fill. Painting with a locked fill has the effect of uncovering the fill.

Use locked fills to make it appear that a single gradient or bitmap fill extends across multiple objects.

The upper and lower boxes are filled with the same locked gradient.
 

To use a locked gradient or bitmap fill:

1	Select the brush or paint bucket tools and choose a gradient or bitmap as fill.
	To use a bitmap as fill, break the bitmap apart and use the dropper tool to select a bitmap before selecting the brush or paint bucket tools. See Painting with a bitmap's image.
2	Click the Lock Fill modifier.
3	Paint the areas where you want to place the center of the fill first, and then move to other areas.