Chord naming question

[Bernd]

At first glance, these two chords looked alike, both being called “A dim11”, but I noticed that they showed different key combinations on Scaler’s virtual keyboard. Then I noticed the small print label on the chord pads. Why is the main label (big font) the same, and the 13 only shown on the roman number subtitle? I understand the significance of the 13, but why wouldn’t it be A dim13 or add 13 in the main label?

[davide]

I think the a13 is an error there, in my translation the second chord is a A dim 7/9/11 The additional F# at the top is just the 7th and octave up not a 13th.