what is Components Placement Drawing ?

Finally today arrived my first PCBA Prototype, I’m very happy for this excellent work. :smiley:
Attached photo and my components placement drawing file.

About bom file I send with this format:

OPL SKU,Qty.,Parts
0011240P1,1,R1
0011330P1,1,R2
301010090,1,R3
301010090,1,R4
Pic18f26k22_Base.pdf (18.6 KB)