Guides, explainers and prepress notes on OCG layers, separations, and the Corel→Adobe handoff. Practical, no fluff.
Illustrator flattens optional-content layers on open. Here's why, and the exact steps to get spot, clear, cut, print and info back as separate, editable files.
A plain-language explanation of optional-content groups and what flattening on open actually does to your file.
Turning a single artwork PDF into clean per-color files your screen-print workflow can actually use.
What each layer type means in a print PDF, and why keeping them separate saves you hours downstream.
The fastest path from a file someone handed you to named, separated layers you can place and edit.