Drawings, padstacks, and board files

Hi,

I am new to Candence PCB Editor software so forgive me for being a novice.

From lowest to highest complextity: padstacks, drawings, boards

I understand that board files encompass both padstacks and drawings and therefore is distributable similar to a PDF. You can edit the library, design, or instance drawing or pad stack when building a board file. However, I am confused when it comes to what is included in a drawing. Are the padstacks used in the drawing embedded in the drawing file?

Thanks,

Aric