I have been learning to make my own library parts
I wanted to make pin headers ( with different pads to the normal pinhead library)
I found out I could make just one library My_Header_Pins.LBR and include in it various sizes of connector
like 3 pins , 4 pins etc .
When I just looked in the library folder I see I have My_Header_Pins.LBR and also several others like
What are these extra files with the strange extension. Are they just something that gets made each time I add to my library
and do I need to keep them or can I just delete them ?