Edit menu

Undo, Redo, Repeat, Recent Commands List
To... Do this

Undo.

Select Edit > Undo or press z.

Redo.

Select Edit > Redo or press + z.

Repeat the last command.

Select Edit > Repeat or press g.

Repeat a recent command.

Select Edit > Recent Commands List to show a list of recent commands.

Hold the space bar to open the hotbox and press in the Recent Commands area on the left to show a menu of recent commands.

Cut, Copy, Paste, Delete
  • Cut — Cuts the selected item and puts it on the clipboard.
  • Copy — Copies the selected item to the clipboard.
  • Paste — Pastes from the clipboard. This can be an object, text, and so on.
  • Delete — Deletes the selected items.
Delete by Type menu
The options in this submenu let you delete each object of a certain type in the scene.

For more information about the options, see Delete by Type menu.

Delete All by Type menu
The items in this submenu let you delete every object of a certain type in the scene.

See also Delete.

Select Tool
Lets you select objects and components in view panels and the texture editor.

See also Select Tool, Tools and actions, and Select objects or components.

Lasso Select Tool
Lets you select objects and components in view panels by drawing a free form shape around them.

See also Lasso Tool, Tools and actions, and Select objects or components.

Paint Selection Tool
Lets you select components by painting over them with the stylus.

See also Paint Selection Tool and Select components by painting.

Select All
Selects all objects or components in the scene based on the current selection mode. When in object mode, all objects are selected. When in component mode, all components are selected.

See also Select objects or components.

Deselect All
Deselects all selected objects in the scene.
Select Hierarchy
Selects all parent and child objects of the current selection (all nodes under the currently selected node in the scene hierarchy).

See also Select objects based on hierarchy and Scene hierarchy.

Invert Selection
Selects all unselected objects, and deselects all selected objects.

See also Select objects or components.

Select Similar
When in component mode, Select Similar selects polygonal components (vertices, edges, and faces) of a similar type to the current selection. When in object mode, this option selects other objects of the same node type in the scene. Select Similar is useful when modeling non-organic objects that have many similar face angles and areas.
The Similarity Tolerance option controls how similar components must be to those in the current selection in order to be selected. Select Similar evaluates each component based on its shape/orientation in relation to its neighbors. The value is set to 0.001 by default. A higher Similarity Tolerance setting selects more components.
Note: Similarity Tolerance only applies to component selections.
Select All by Type
The items in this submenu select every object of a certain type in the scene.

See also Select objects or components.

Quick Select Sets
The items in this submenu correspond to the quick selection sets you create with Create > Sets > Quick Select Set. Use this menu to quickly switch between common selections.

See also http://beehive.autodesk.com/community/service/rest/cloudhelp/resource/cloudhelpchannel/guidcrossbook/jsonp?v=2015&p=MAYALT&l=ENU&guid=GUID-FBDA2225-429E-4DF0-BE74-8504FD9AFD91.

Duplicate
Creates a single copy of the selection.

See also Duplicate.

Duplicate Special
Creates one or more duplicates of the selection, optionally with transformations applied to each duplicate.

Select Edit > Duplicate Special > to set the Duplicate Special Options.

Duplicate with Transform
Duplicates the selection and applies the last transformation you did with the current manipulator.

If you do a transform and then make the manipulator go away (for example, but deselecting the object), Maya forgets the last transformation. See also Duplicate.

Transfer Attribute Values
Populates the attribute values of one object (the target) with the attribute values of another (the source) for all identically named attributes that the source and target share, over all frames in the timeline.

Select Edit > Transfer Attribute Values > to set the Transfer Attribute Values options.

Group
Groups objects together under a new transform node, allowing you to select and transform them all at once.

Select Edit > Duplicate Special > to set the Group Options.

Ungroup
Ungroups the objects under a group node.

Select Edit > Ungroup > to set the Ungroup Options.

Level of Detail
Lets you associate multiple versions of some geometry to be replaced based on distance in a game engine.

Select Edit > Level of Detail to choose Group or Ungroup options. See Level of Detail Options for more information.

Parent
Makes the selected nodes children of the last node you selected (the key object). Select the objects you want to assign to the parent, then shift-select the parent and select Edit > Parent. That is, if two objects are selected in sequence, the first selected object becomes a child of the second selected object.

The child objects remain selected after the parent operation is completed, and the parent object is deselected.

Select Edit > Parent > to set the Parent Options.

Unparent
Unparents the selected object.

Select Edit > Parent > to set the Unparent Options.