User guide

Welcome 7
selections between any open file. Use combination buttons (as for shapes)
to define cutout selection regions. Convert selections into paths.
Crop to Common Print Sizes
Use the Crop Tool for easy cropping to different portrait and landscape
preset and custom print sizes—print resolution will auto-adjust to honour
any print size.
Special Erase Options
Need to remove that blue sky and leave the clouds? Use the Flood Eraser to
fill the blue regions with transparency. Want to isolate a shape from a flat
color background? The Background Eraser samples pixels under the brush,
so only unwanted colors drop out.
Color
16-bit Color Depth/Detail
Work in high levels of detail (16-bits/channel) for both RGB and grayscale
modes. Each mode can be adopted from scratch or after raw/HD photo
import and when outputting HDR merge results.
Channels
Use PhotoPlus's Channels tab to edit the Red, Green and Blue channels
independently.
Histogram Support
The Histogram tab dynamically responds to show the values for the
currently active selection within your document. See how curves and level
adjustments affect your image as they happen!
Custom and preset color selection
The Color tab operates in RGB, CMYK, HSL, and Grayscale models for
selecting foreground and background colors when painting, creating lines
or filling shapes. Use the Swatches tab for themed galleries of preset color
swatches. Use a Web-browser safe category when outputting to the web.