2374 Bentley Microstation Hidden Line File Model These are hidden line files, one of a range of files created when using Microstation CAD software for 2D and 3D design, which is produced by Bentley Systems, Incorporated. 216 The Canadian Centre for Architecture / The Canadian Centre for Architecture 15 Nov 2021 15 Nov 2021 fmt/1549 PUID hln File extension 1894 Bentley Microstation Hidden Line File BOF absolute zero: 08 09 FE magic bytes ..þ EOF absolute zero: FF FF magic bytes: ÿÿ 1 Absolute from BOF 0 0 0809FE 1 Absolute from EOF 0 0 FFFF Has lower priority than 2176 MicroStation Base File