The old OT has a way to “undo” mistakes by deleting the local copy of your program and re-downloading the previous version from the Gemini database. However, this is not obvious and the process is not intuitive. The new 2018B OT solves this by adding a “Revert Changes…” option to the “File” menu. This will re-download your program from the Gemini database, thereby reverting all your changes since the last time you clicked the “Sync” button. Note that if anybody else has made changes to your program and uploaded them to Gemini the “Revert Changes…” option will also pull in those changes since the program is being downloaded from the database. After selecting “Revert Changes…” the OT will ask for a final confirmation in the form of a pop-up:
