You can sort of do something similiar if you start using the command window in IRIS. For something like this I would open the command window, use the save command. For example step1 you could type "save step1" , for step2 "save step2", etc. If you recall it you can type "load step1", etc. Perhaps he will add history in later releases.
Unfortunately there would be a fair bit of work for Christian to do a ground up redesign of IRIS, to modernise the interface.
Terry
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