This test checks for labels of water data nodes which can use Unicode.
For a water data node the label H2O is used, but the chemically more correct Unicode version H₂O can be used.
Open the pathway and replace the H2O label with a H₂O label.
IMPORTANT: PathVisio 3.3 currently does not display Unicode characters correctly in the main view, but it can still be used to edit the labels. After uploading, the classic and the new website will display the Unicode label correctly.