PyMuPDF 1.26.7 page text PDF reference extraction practice Fictional teaching bibliography. Do not cite these records. References [1] A. Example, Packet Timing, Sample Press, 2024. [2] B. Example, Network Queues, Sample Press, 2025. [3] C. Example, Link Testing, Sample Press, 2026. Line-start grouping [1] A. Example, Packet Timing, Sample Press, 2024. [2] B. Example, Network Queues, Sample Press, 2025. [3] C. Example, Link Testing, Sample Press, 2026.