Text files containing sequential CLI commands. They are primarily used to configure custom user interfaces, grid preferences, and layer color schemes instantly.
Designing a physical circuit board in Eagle Professional 7.1.0 follows a structured, linear pipeline: Step 1: Library Creation and Component Selection
Version 7 introduced the ability to save and reuse "Design Blocks."
Open the Control Panel → Create a new project → Name it. This creates a .sch (schematic) and .brd (board) file pair.