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awesome! thanks for the example! works very nice and I even understand the code

Hi,

for my project I'm using a special notation for some layout items. For example, to display the connections of an item A I write:
$$\prescript{t}{l}{A}^b_r$$

However, while left (l) and right (r) are on the left and right of A the top (t) and bottom (b) are both upper indices.

What I'm ...