When a symbol is used in place of a word, its meaning is shown in a popup: .
In all links, non-trivial errors are underlined in red with popup explanation.
Other questionable text is marked with red dotted underlining; hover the mouse over the text to see a popup Transcriber's Note.
They are marked and the corrected text is shown in the popup.
They are underlined in red, with a popup Transcriber's Note containing the correct spelling.