, reads stdin; EOF → 0. . appends to stdout shown below.compile_bf (mirrors compiler/bf_to_tm.py). tape rows scroll, head boxed.
appendants: a0, a1, … and tape: YYN…. Use _ for empty appendant.cts: encode the CTS tape via encode_cts_state (one C-glider per Y, ether per N). Otherwise glider placements OR raw bitstring. Crossings ringed in yellow.