Early TSS (an interactive system that ultimately became TSO) was announced and promised a lot. Then IBM began to back peddle and decommit from previous announcements. This button simply extended the next step after decommittment, I.e. de-conceive. It led several years later to the Re-Conceive (Button #208) when TSO/VS2 was announced. It created street havoc with a few non-SHARE people who took it as a pro-abortion statement!