1 CHECK Verifies the application of the patches associated with a given ECO level. 2 ECO Use CHECK ECO to verify that the patches represented by one or more ECO levels have been applied to the image file. Remember that an ECO level is not applied until the patch that it represents is terminated by the UPDATE command. For example, if you define an ECO level with the SET ECO command, then immediately check to see whether the ECO level is applied, PATCH returns an error message indicating that the ECO level is not applied. When you issue the CHECK ECO command, you do not have to list all the ECO levels that have been applied to a particular image file. However, specifying one or more ECO levels that have not been applied will produce an error message. Format: CHECK ECO eco-level [:eco-level] [,...] Prompts: ECO> eco-level 3 Parameters eco-level Indicates one or more ECO levels that have been applied. ECO levels can be entered in: o Comma-separated lists o Colon-separated ranges Both comma-separated lists and colon-separated ranges can be specified on the initial command line. However, only one ECO level or one range of ECO levels can be entered in response to an ECO level prompt (ECO>). 2 NOT ECO Use CHECK NOT ECO to check that one or more ECO levels are available for use in a particular image file. The CHECK NOT ECO command is the negation of the CHECK ECO command. It too can be used to confirm that a particular patch has been applied to an image file. Typically, however, the CHECK NOT ECO command is used to confirm the ECO levels that are available for use in the current image file. Format: CHECK NOT ECO eco-level [:eco-level] [,...] Prompts: ECO> eco-level 3 Parameters eco-level Indicates the ECO levels that are not in use. ECO levels can be entered in: o Comma-separated lists o Colon-separated ranges Both comma-separated lists and colon-separated ranges can be entered on the initial command. However, only one ECO level or one range of ECO levels can be entered in response to an ECO level prompt (ECO>).