NURMS Toggle is a compact macro for 3ds Max, written by Martin Breidt. Its function is narrow and specific: it switches an Editable Poly object between two display states. One is the NURMS-subdivided version displayed in Smooth Shading; the other is the base Editable Poly shown with a wireframe overlay. A single toggle moves between the two.
The macro is listed at version 0.1 and comes from the ScriptSpot library, where it sits among 3ds Max scripts. It is authored by Martin Breidt, whose collection of scripts is hosted at breidt.net. Both of its states describe how the Editable Poly appears in the viewport: the subdivided smooth result on one side, the base object with its wireframe on the other.
For anyone moving between a smoothed preview and the underlying poly display in 3ds Max, NURMS Toggle keeps that change to one macro. Current licensing, download and any newer builds are best confirmed on the developer's page.