I don't know how to inform Cadence about an error in their documentation, so I just thought I'd mention that there is a typo in the Virtuoso Visualization and Analysis XL SKILL Reference manual (Product Version IC6.1.7 Feburary 2017) regarding the awvPlotWaveform function on page 129.
It describes details for the argument "?showSymbol" but it should really be "?showSymbols"