these are possible using only studio…if you check in studio web you would not see them…
as of now they are not there…and REF is designed for windows and legacy and not for Cross platform as of now
you would not see a normal write rnage workbook activity it would be complete different for cross platform…for reading config you need one…like this there are many challenges…so it was not built as of now…you can try implementing if you want to make a complex cross platform project
cheers