--arrange

An int option (0 disable / 1 enable / any other value = auto; default 0) that controls whether the slicer repositions objects on the plate before slicing.

0 keeps every object's incoming position from the 3MF. 1 discards the stored layout and re-packs every object from scratch. Any other value is auto: a Bambu/Orca 3MF (which embeds a plate layout) keeps its positions, while a raw mesh such as an STL or OBJ is arranged from scratch. When arrange runs it packs each object's inflated footprint onto the bed, treating the wipe tower and any excluded or calibration regions as fixed obstacles, then writes the new positions back before slicing. --repetitions forces arrange on regardless, since the extra copies have to be placed.

Three companion flags apply only when arrange actually runs: --allow-rotations lets the packer rotate footprints for density, --avoid-extrusion-cali-region biases placement away from the calibration corner, and --allow-multicolor-oneplate lets objects using different filaments share a plate. All three are ignored when arrange is disabled.