| A | B |
|---|
| layer | an image superimposed or separated from other parts of the document |
| opaque | layers that are solide and eclipse |
| composite images | images that combine or merge multiple images and drawings |
| PSD | the default file format in Photoshop |
| background | single layer |
| stacking order | adding new layers on top of another layer |
| layers palette | usually located in the lowest level of palettes on the right |
| thumbnail | small visual display of the layer |
| layer bounds | causes the Layers palette to display only the layer |
| active layer | selected layer |
| eraser tools | changeas pixels in the image as you drag through them |
| magic eraser tool | erases all similarly colored pixels with one click |
| background eraser tool | erases the background while maintaining the edges of an object in the foreground |
| tolerance | defines the range of colors that can be erased |
| hot spot | samples the color in the center of the mouse pointer |
| mask | to show or hide portions of a layer |
| grayscale image | each pixel in the image is represented by a single sample value |
| linked | connected to the selected layer |
| filter adjustments | apply predetermined pictures, tiles or patterns |
| opacity box | allows you to change the opacity or transparency of a layer |
| pattern stamp tool | allows you to paint with a patter chosen from Photoshop's patter library |
| flattening | images reduces the file size by merging all visible layers into the background |
