G04 start of page 4 for group 10 layer_idx 1 *
G04 Title: one line per each type of copper layer, bottom_copper *
G04 Creator: <version>
G04 CreationDate: <date>
G04 For: TEST *
G04 Format: Gerber/RS-274X *
G04 PCB-Dimensions: 50000 50000 *
G04 PCB-Coordinate-Origin: lower left *
%MOIN*%
%FSLAX25Y25*%
%LNBOTTOM_COPPER_NONE_10*%
%ADD13C,0.0100*%
G54D13*X7500Y42500D02*X40000D01*
M02*
