obsolete Declares a line of descent obsolete. Format obsolete element_name[/branch_path] Description obsolete declares the specified line of descent (main line or branch) to be obsolete, thereby prohibiting the addition of new versions to it. The target line of descent cannot be currently reserved, merged, or obsolete. If the named element is not in the current library and you have a current system model setting, the DSEE facility searches the current model for an Element of the given name. If it finds a single Element block with the same name, the DSEE facility resets your current library setting to the library containing that Element's primary dependency and then performs the specified operation. By default, the DSEE facility asks if you're sure you want to obsolete the line of descent before executing the command. If you answer yes, the DSEE facility opens an edit pad and asks you to explain why you're performing the operation. Once a line of descent is obsolete, you may not reserve or replace it. However, you may fetch or read existing versions of an obsolete line of descent or create new branches from it. show status with the -full option reports the status of obsolete lines of descent (as well as on-going ones). You can also use show derivation to determine which lines of descent of an element are obsolete. To reactivate an obsolete line of descent, issue the cancel obsolete command. (Type help cancel obsolete for information about this command.)