Command reference

Every command is typed on the command line (Tab completes, F1 opens this list inside the app). Aliases in parentheses. Commands that need a file open a filtered chooser by default. Append --headless to keep the typed path prompt for scripts and automation.

Booleans

Command	Does
booleandifference (difference, bd)	Booleandifference
booleanintersection (intersection, bi)	Booleanintersection
booleanunion (union, bu)	Booleanunion
curveboolean (curvebool)	Closed curves around the regions of overlapping planar curves. KeepObjects leaves the curves it worked from in place.

Camera

Command	Does
camera (cam)	Camera

Capture

Command	Does
turntable	Orbit the camera once around the work and write a video clip;
turntableui	Record a portrait turntable of the current shot and application UI.

Curves

Command	Does
arc (a)	Arc through three points; or Center and a sweep, or StartEnd.
circle (c, ci)	Circle from center and radius; or 2Point across, or 3Point through.
closecrv (cc, closecurve)	Close open curves with a straight segment between their ends.
curve (cv)	NURBS curve by control points, as Rhino's Curve does.
divide	Divide
ellipse (el)	Ellipse from center and two radii; Diameter takes an axis whole.
interpcrv (interpcurve)	NURBS curve through picked points; Close joins it back smoothly.
line (l)	Straight line; BothSides grows it evenly out of its middle.
point (pt)	Point
polyline (pl, pline)	Polyline
rectangle (rect, rec)	Rectangle corner to corner; or Center out, or 3Point to lean it.
tweencurves (tween)	Tweencurves

Deformation

Command	Does
bend	Bend
curvaturegraph (combs)	Toggle curvature combs on selected curves.
draftanalysis (draft)	Colour faces by draft angle relative to the pull direction (+Z):
extend	Extend
flow (flowalongcrv)	Flow
matchcrv (match)	Matchcrv
taper	Taper
twist	Twist

Display & views

Command	Does
1view (oneview, singleview)	1view
4view (fourview, quadview)	Split the model area into Top / Front / Right / Perspective.
ai (assistant)	Open the AI assistant panel — model by describing what you want.
angle	Angle at a vertex point between two directions.
area	Area
back	Back
bottom	Bottom
clippingplane (clip)	Place a rectangular clipping plane parallel to the CPlane through the first corner.
cplane	Reposition the construction plane (drawing plane + grid).
curvature	Curvature
curvatureanalysis (curvmap)	Curvatureanalysis
disableclippingplane (dcc)	Pause clipping planes (they stay in the scene, the cut stops).
distance (dist)	Distance
enableclippingplane (ecc)	Re-enable paused clipping planes.
floatviewport (floatvp)	Open a floating viewport window (drag it to another monitor).
front	Front
ghosted (gh)	Ghosted
grid	Grid
gridsnap	Gridsnap
gumball	Gumball
gumballalignment	Choose what the gumball's axes follow: the CPlane, the object, the world or the view.
isocurves (showisocurves)	Show or hide the wires across surfaces in this viewport.
isometric (iso)	Isometric
left	Left
length (len)	Length
maxviewport (max, maximizeviewport)	Give the pane you are in the whole window; again puts it back.
namedview (nv)	Namedview
newviewport (newvp, splitview)	Open an extra live viewport in a dockable panel — drag its title
ortho	Toggle ortho: picked points lock to CPlane axes from the last
osnap	Toggle one object-snap type (or All = the master switch) —
perspective (persp)	Perspective
pictureframe (picture)	Choose and place an embedded reference image for tracing.
pointsoff (pf)	Pointsoff
pointson (po)	Show control points for selected curves and surfaces (F10).
printcheck (printinfo)	Check selected objects for 3D-print readiness: watertight, manifold,
radius	Radius of curvature of a curve at a picked point.
redoview	Go forward again through the views undoview stepped back through.
rendered (render)	Environment-lit display with materials and a ground shadow.
right	Right
selclippingplane	Select every clipping plane object.
shaded (sh)	Shaded
snap	Snap
spacemouse (3dmouse)	SpaceMouse status, on/off toggle, and a live axis readout for
surfaceedges (showedges)	Show or hide the outlines of faces. Curves and text are unaffected.
technical (tech)	Hidden-line technical display (parallel projection linework).
tolerance	Show or set the document's absolute modelling tolerance.
top	Top
undoview	Put the view back where it was before the last view change.
units	Set document units; optionally rescale the model to keep real size.
viewcapturetoclipboard (vcc)	Copy the active viewport image to the clipboard.
viewcapturetofile (vcf, viewcapture)	Save the active viewport as a PNG image.
volume (vol)	Volume
wireframe (wf)	Wireframe
zebra	Zebra
zoom (z)	Zoom the active view: Selected, Extents, a picked Window, In, Out.
zoomextents (ze, zea)	Zoomextents
zoomselected (zs)	Frame the current selection in the active view.
zoomwindow (zw)	Zoom into a window picked with two corner points.

Drafting & layouts

Command	Does
annotedit (editnote, edittext)	Edit the annotation nearest a picked point (text, style).
detail	Detail
detailborder	Detailborder
detaildelete	Detaildelete
detaillock	Detaillock
detailmode	Detailmode
detailscale	Detailscale
detailsection	Detailsection
dim (dimension, dimlinear)	Dim
dimangle (dimangular)	Dimangle
dimdiameter (dimdia)	Dimdiameter
dimradius (dimr)	Dimradius
dimstyle (textstyle)	Create or edit a named annotation style (text height, arrows).
dot (annotationdot)	Model-space annotation dots: a label bubble anchored to a 3D point.
exportdxf	Export the active layout sheet (or the model) to DXF.
exportpdf (pdf)	Exportpdf
exportsvg	Exportsvg
hatch	Fill a region with a pattern, on a sheet or in the model, starting from its layer's hatch. Curves that cross ask which of the regions they make to fill (All, or Alt+A, for every one).
layout	Layout
leader	Leader
make2d	Make2d
printsheets (print, plot)	Print sheets, or save them as one PDF, choosing them from the set.
revision	Add a row to this sheet's revision table (drawn by the title block).
scalebar	Scalebar
sheetindex	Place an index of all sheets as a note on the current layout.
text (note)	Text
titleblock	Titleblock

Editing

Command	Does
boundingbox (bb)	Create the world-aligned bounding box of the selection.
chamfer	Bevel the corner between two curves with straight cut-offs.
delete (del, erase)	Delete
dir	Show which way curves run and which way surfaces face.
explode (x)	Explode
fillet	Round two curves in the plane they already lie on, or edges of a selected solid/surface.
filletcorners	Round every corner of a polyline at once with one radius — straight and arc pieces both round.
flip	Turn curves round and surfaces inside out, as Rhino's Flip does.
hide	Hide
insertknot (insertcontrolpoint)	Add a control point to a curve without moving the curve.
join (j)	Join
layer	Layer
material (mat)	Assign a look (metallic/roughness/opacity) for rendered display
offset	Offset
plugins	List loaded plugins and where they came from.
rebuild	Rebuild
recordhistory (history)	Toggle record history: loft/extrude/revolve outputs rebuild when
redo	Redo
removecontrolpoint	Delete the control points you are holding, as Delete does.
removeknot	Take a knot out of a curve and say how far the curve moved.
rename	Rename
selall (sa)	Selall
selnone (sn)	Selnone
show (unhide)	Show
smooth	Relax a curve's control points toward their neighbours.
split	Split
trim (tr)	Cut objects with the cutters and take away the part clicked.
undo	Undo

Files

Command	Does
export (exp)	Export
import (imp)	Import
new	New
open	Open
save	Save
setdefaultapp	Make Serpentine3D the default application for .serp files.

Help

Command	Does
help (?)	Describe a command, or list every command by category.

Organisation

Command	Does
audit	Check every object's geometry for validity.
block	Turn a selection into a reusable block definition + one instance.
blocklist (blockmanager)	Blocklist
breptomesh (meshify)	Convert BREP objects into lightweight native meshes.
bringforward (bringforwards)	Nudge the selected objects one step towards the front.
bringtofront (bf)	Draw the selected objects on top of overlapping ones.
changelayer (tolayer)	Move objects to a layer by name (created if missing).
count	Count objects: totals by block, kind and layer (for takeoffs).
getusertext	Report the user text on the selected objects, as Rhino's GetUserText does: one key's value, or with Enter every key.
group	Group objects and keep them selected.
insert	Insert
linetype (lt, setlinetype)	Set the dash style of selected objects (Continuous/Dashed/…/ByLayer).
lock	Lock
lockother	Lock everything except what you picked, as Rhino's LockOther does.
matchprops (matchproperties)	Copy an object's layer, colour, material, print width and hatch.
meshtobrep	Convert mesh objects into exact BREP shells (slow for big meshes).
pointcloud (pc)	Point clouds: info says what a scan holds; subsample keeps an
printwidth (plotweight, printweight)	Set the pen width selected objects plot with, or ByLayer.
purge	Remove empty layers and unused block definitions.
sectionhatch (sectionstyle)	Set how a section cut through selected objects is filled.
sendbackward (sendbackwards)	Nudge the selected objects one step towards the back.
sendtoback (sb)	Draw the selected objects behind overlapping ones.
setusertext (setattributeusertext)	Set a key of user text on the selected objects, as Rhino's SetUserText does.
ungroup	Ungroup objects and keep them selected.
unlockall (unlock)	Unlockall
what	Report details of the selected objects.

Selection

Command	Does
invert (selinv)	Invert
isolate	Isolate
selcrv (selcurves)	Selcrv
seldup	Select later duplicates of identical, identically-placed objects.
selfilter (selectionfilter)	Restrict viewport picking to one kind of object (Off = anything).
selfiltertoggle (sft)	Pause/resume the selection filter without changing its kind.
selhatch (selhatches)	Select every hatch.
sellast	Sellast
sellayer	Sellayer
selname	Select objects whose name contains the given text.
selpointcloud (selpc, selpointclouds)	Selpointcloud
selprev	Restore the previous selection.
selpt (selpoints)	Selpt
selsolid (selsolids)	Selsolid
selsrf (selsurfaces)	Selsrf
unisolate	Unisolate

Solid editing

Command	Does
booleansplit (bsplit)	Split solids with cutters, keeping every piece.
cap	Cap
chamferedge (che)	Chamferedge
contour	Contour
filletedge (fe)	Fillet edges. Ctrl+Shift-click edges first to fillet only those; the radius may be start,end or u:r;u:r;… for a variable law along the smooth chain, straight between points on request.
intersect (int)	Intersect
mergeallcoplanarfaces (mergeallfaces)	Fuse coplanar neighbouring faces of each selected polysurface.
pushpull (pp, moveface)	SketchUp-style push/pull on a planar face.
section (sec)	Cut the selection with a plane drawn as a line across it.

Solids

Command	Does
box	Box from a base and height; Center spreads the base evenly.
cone	Cone
cylinder (cyl)	Cylinder
sphere (sph)	Sphere from center and radius; 2Point spans a diameter instead.
torus	Torus

Surfaces

Command	Does
blendcrv (blend)	Blendcrv
blendsrf	G1 blend surface between two Ctrl+Shift-picked surface edges.
dupborder	Dupborder
dupedge	Duplicate Ctrl+Shift-picked edges as curves.
dupfaceborder	Duplicate the border wires of Ctrl+Shift-picked faces as curves.
edgesrf (srfedges)	Edgesrf
extendsrf	Extend a surface past a Ctrl+Shift-picked boundary edge.
extractisocurve (isocurve)	Extractisocurve
extractsrf (extractsurface, extractface)	Pull Ctrl+Shift-picked faces out of the polysurfaces holding them.
extrude (ext, extrudecrv)	Extrude
helix	Helix
loft	Loft
offsetsrf	Offsetsrf
patch (networksrf)	Patch
pipe	Pipe
planarsrf (planar, planesrf)	Planarsrf
project	Project
pull	Pull
revolve (rev)	Revolve
shell	Shell
sweep1 (sweep)	Sweep1
sweep2	Sweep2
textobject (textcurves)	Place editable model text or grouped letter outline curves.
unrollsrf (unroll)	Unrollsrf
untrim	Untrim

Transforms

Command	Does
array	Array
arraypath (arraycrv)	Arraypath
arraypolar	Arraypolar
copy (co, cp)	Copy objects; Vertical constrains copies along the CPlane normal.
mirror (mi)	Mirror
move (m)	Move objects or held parts; Vertical constrains movement along the CPlane normal.
orient (o2)	Remap objects from two reference points to two target points
orient3pt (o3)	Remap objects from three reference points to three target points
projecttocplane (flatten)	Flatten curves/surfaces/points onto the construction plane.
rotate (ro)	Rotate around the CPlane normal: type an angle, or pick a
rotate3d (ro3)	Rotate around an arbitrary axis picked as two points: type an
scale (sc)	Scale about a base point: type a factor, or grab a reference
scale1d	Stretch along one direction only: type a factor and it stretches
scale2d	Scale in the CPlane only (thickness along the CPlane normal is
scalenu	Scale by a different amount along each axis: type the three
setpt (setpoints)	Set chosen X/Y/Z coordinates on objects or held faces, edges and curve segments, with live previews.