Specifically designed for modern electronics, many macros in the library are for surface-mount devices (SMD) meant to be soldered onto the Top Copper (C1) layer.
: If you can't find a specific footprint, you can easily create your own by measuring pin lengths and saving the layout as an .LMK file fmuser.net. 🛠️ How to Install New Macros
The go-to for microcontrollers like the ATmega328 (32, 44, and 64-pin).