Modo 14.0v2 docs:

Editing Items

Modo offers a variety of tools to divide geometry in different ways. To reshape existing surfaces, you can use the various slicing functions to add more geometry to any surface area lacking in polygonal density. The Boolean and Drill tools shape forms by adding and subtracting simple shapes to create more complex ones. The subdivide commands provide a simple way to increase overall density across a mesh (perhaps in preparation for applying sculpting tools). For information on using a specific tool, click a link below to see that tool's topic.

Slice
	Slice	Sets a slicing plane through the currently-selected geometry.
	Axis Slice	Creates one or more evenly spaced slices aligned on the X, Y, or Z axes.
	Curve Slice	Cuts the mesh with a user-defined curve.
	Julienne	Creates multiple evenly-spaced slices that you can position interactively in the 3D viewport with resulting geometry that contains inner faces.
	Edge Slice	Creates a slice between edges by clicking from edge to edge.
	Topology Pen	Re-topologizes high-resolution geometry.
	Pen Slice	Similar to the pen tool, creates a slice plane.
	Contour	Generates contours from user-defined slices across an existing polygon surface.
	Loop Slice	Lets you slice additional edge loops into your geometry.
	Shatter	Breaks a model into a specified number of individual pieces.
Edit
	Booleans	Combines mesh layers in various ways (Union, Intersect, Subtract, and Add).
	Solid Drill	Performs Boolean operations onto flat 2D polygons by using overlapping 3D geometry.
	Axis Drill	Performs Boolean-like operations with 2D polygons projected down a specified axis.
	SDS Subdivide	Recursively splits the selected polygons into smaller polygons.
Other
	Edit Commands - Cut/Copy/Paste	Cut, Copy, and Paste commands.
	Edit Commands - Delete/Remove	Discards selected elements from a model/scene.
	Mesh Cleanup	Repairs problematic geometry.
	Slice Effector	Cuts geometry on a mesh along the particle positions provided by a tool generator connecting to Tool Pipe. This is used in combination with the Pen Slice and Curve Slice tools.
	Auto Retopo	Generates a new mesh item from the input surface. For more information, see Automatic Retopology Tool.
	Retopo Edge Lock	Refines your geometry results based on curves drawn on sharp edges. For more information, see Refining Your Geometry Results.
	Retopo Edge Flow	Refines your geometry results based on curves drawn for directional flow. For more information, see Refining Your Geometry Results.