The modern level workflow — import a GSI from an LS15 or DNA03 — with the one thing no package handles: a precise optical tape drop inserted mid-run for a shaft transfer. LS15 to the shaft edge, NAK2 and calibrated tape down it, LS15 onward — booked as one adjusted, auditable line.
A digital loop and an optical tape drop reduced together, each leg carrying its own instrument and its own correction — not two spreadsheets stapled together.
Tape and instrument registers with two-peg history, spike offsets, misclosure distribution, section checks and the live schematic all come across intact.
Outputs the same .obs every other module reads, so a levelled height can constrain a 3D network in the combined story.