Cycling through Layer Comps
After creating the layer comps that you need, you want to view the layer comps to compare the different layer settings.You can cycle through layer comps in two ways: Select them one-by-one in the Layer comps palette or use the arrow buttons to move backward or forward through the layer comps. Here’s how:View layer comps individually: Click in the column to the left of the layer comp. The tiny layer comp icon appears in the column and the layer comp is selected.
Cycle forward through the layer comps: Click the Apply Next button at the bottom of the Layer Comps palette.
Cycle backward through the layer comps: Click the Apply Previous button at the bottom of the Layer Comps palette.