ShowSelected

Shows only selected hidden objects
只显示所选择的隐藏物体

　 ShowToolbar

Show a toolbar
显示工具条

ShrinkTrimmedSrf

Shrink the underlying untrimmed surface near to trimming boundaries
缩小修剪前的曲面边界大小，使曲面贴图在修剪完成后能完全（正常）显示

Silhouette

Create silhouette curves of a surface or polysurface
生成曲面或多边形表面物体的轮廓线

SimplifyCrv

Simplify curves
减小曲面分段数，简化曲线

Sketch

Sketch a curve
徒手自由绘制曲线

SketchOnMesh

Sketch a curve on a polygon mesh
在多边形网格物体上自由绘制曲线

SketchOnSrf

Sketch a curve on a surface
在曲面上自由绘制曲线

Smooth

Smooth objects
平均分布物体的控制点，形成平滑处理

　 Snap

Toggle snap mode
打开/关闭物体捕捉模式

SnapSize

Set snap size
设定捕捉精度确增量

Sphere

Draw a sphere
画球体

Sphere3Pt

Draw a sphere through three points
通过三点画球体

SphereD

Draw a sphere by its diameter
设定直径，绘制球体

Spiral

Draw a spiral
画螺旋线

Split

Split one object with another
用一物体分割另一物体

SplitEdge

Split the edge of a surface
分割曲面的边

SplitViewportHorizontal

Split a viewport horizontally
水平分割视窗

SplitViewportVertical

Split a viewport vertically
垂直分割视窗

Spotlight

Insert a spotlight
插入聚光灯

SrfControlPtGrid

Create a surface by picking a grid of control points
依次点取控制点组成的栅格，生成面

SrfPt

Draw a surface by corner points
通过角点生成表面

SrfPtGrid

Create a surface by picking a grid of points
依次点取点物体组成的栅格，生成面

　 StatusBar

Toggle the display of the status bar
打开/关闭状态栏的显示

SubCrv

Trim a curve by two points
利用两点修剪曲线

　 SwapUV

Swap the u- and v-directions of a surface
对换表面的UV坐标方向

　 SwapView

Swap views of two viewports
对换两个不同的视图

Sweep1

Create a 1-Rail sweep
生成单轨放样延伸（Sweep）曲面

Sweep2

Create a 2-Rail sweep
生成双轨放样延伸（sweep）曲面

　 SynchronizeViews

Sets the scale and center of all viewports to match those of the "active" viewport.
使所有视图的大小与中心与当前视图窗相对应