Hello, thanks again for all answers regarding labelling. It has mostly worked but I am now having a particular problem with leqalignno. It turns out that the \placeformula[mylabel] works as expected but for \leqalignno This is an example: ---------------------------------- \placeformula[Pflux] \startformula \leqalignno{ f_{q}^{p}(v) &= \frac{32}{5} \nu^{10} v^{10} \left[1 + \log\left(v\right) \left(\sum_{i\geq6}^{k} \ell_{i} v^{i} \right) \right]\cr &\times P_{q}^{p} \left[\left(1 - \frac{v}{v_{\p}} \right) \sum_{i=0}^{k} {\cal{F}}_{i}^{\lf} v^{i} \right],\cr } \stopformula ---------------------------------- Then, when doing Eq.~\in[Pflux] in the text, it will produce an ?? in the resulting pdf. Any help will be appreciated. Thanks, Pau