IntProperty and FloatProperty can take an optional range, step and unit. PropertyList shows those settings as a Slider: a track to click or drag, snapping to the step, with the value and unit beside it. Zoom and freelook levels and durations, fullbright brightness, the theme radii, animation timings and HUD scale and radius get ranges; the rest stay number boxes. Co-Authored-By: Claude Opus 5.5 <[email protected]>