I'm able to insert some nodes. However, within these nodes, I can't insert text that would include subscripts (for example, the expression "P_i(n)").

1 Answer 1


Select the node, ensure it's label has HTML turned on (Text->Formatted Text):

Location of the HTML label switch

Then start editing the label (which is now HTML). The toolbar will change to the HTML label toolbar, providing a subscript option:

The subscript menu option

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