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From the command window, you can type
SHOW Y.LINE
to show the line plot of series X. If you want X to normalized, you r command is
SHOW X.LINE(n)

I can't find the option to show log scale or inverted scale. None of these work:
SHOW X.LINE(L)
SHOW X.LINE(LOG)
SHOW X.(LN)

Out of Guesses!

Look up the graph.axis command. It has options for all of the scaling.

OK, but this involves the use of the GRAPH object, rather than graphical views of the SERIES Object. I'd recommend adding a command along the line implied by by initial question: show x.line(log). It would be much more convenient.