I want to save the current file under a new name without changing the name of the file in focus.
It would be like the export macro except that it 'exports' to a plain text file under a name I choose.
It would be like the 'save as' function except that the file in edit focus retains the name it was opened under.
It would be a "write backup" function. Very nice to have would be a default versioning applied to the filename but there be devils there so...
Currently I must either 'save as' and then reload, or drop out to terminal to copy from there. These solutions do the job but are a break in the work flow.