Undo/Reverse Comparison

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Undo/Reverse Comparison

You can undo or reverse changes you make to your model. The following table summarizes the differences between the three available features, and suggests when it is appropriate to use each one:

Feature	Toolbar	When to Use
Undo	Standard toolbar	When you want to undo the last, single action you took. This feature is similar to the Microsoft Windows undo feature; it lets you undo the last action taken.
Reverse	Action Log toolbar	When you want to perform an opposite action that is not the last action you took in the current modeling session. This feature applies to the entire transaction even if you select only the object or property level node. You can use the Undo button to undo a reverse action made in error. For some transactions, you can also reverse a reverse action. Note that you cannot perform a sequential reverse using this feature.
Undo to selected transaction/ Undo to this point	Action Log toolbar	When you want to undo sequential transactions performed in the current modeling session. This feature lets you undo a range, or sequential grouping, of transactions at one time. You can perform a redo to selected transaction to the same group of transactions or a smaller set of the consecutive transactions in the group. You can use this feature at any time during the current modeling session.

Feature

Toolbar

When to Use

Undo

Standard toolbar

When you want to undo the last, single action you took.

This feature is similar to the Microsoft Windows undo feature; it lets you undo the last action taken.

Reverse

Action Log toolbar

When you want to perform an opposite action that is not the last action you took in the current modeling session.

This feature applies to the entire transaction even if you select only the object or property level node.

You can use the Undo button to undo a reverse action made in error. For some transactions, you can also reverse a reverse action.

Note that you cannot perform a sequential reverse using this feature.

Undo to selected transaction/ Undo to this point

Action Log toolbar

When you want to undo sequential transactions performed in the current modeling session.

This feature lets you undo a range, or sequential grouping, of transactions at one time.

You can perform a redo to selected transaction to the same group of transactions or a smaller set of the consecutive transactions in the group. You can use this feature at any time during the current modeling session.