Hi mailing list, Could someone help me figuring out what is the simplest way to have all my math font without serif, in the small example below, without losing anything, such as my \tau parameter ? Thank you very much for any hint ! \enableregime[il1] \setupbodyfont[sansserif,11pt] \starttext \startformula \startalign \NC Q_{x_T}(H_0)\equiv Q(H_0)\NC=\sum_{H_1,\dots,H_{\tau^*-1}}\left(\prod_{\tau=0}^{\tau^*-1} h_{x_Tx_{T_0}}(H_\tau|H_{\tau+1})\;P_{x_{T_0}}(H_{\tau+1}|H_\tau)\right)\NR \NC\NC=\sum_{H_1,\dots,H_{\tau^*-1}}\left(\prod_{\tau=0}^{\tau^*-1} h_{x_Tx_{T_0}}(H_\tau|H_{\tau+1})\prod_{\tau=0}^{\tau^*-1}P_{x_{T_0}}(H_{\tau+1}|H_\tau)\right)\NR \NC\NC=\Epsilon_{P_{x_{T_0}}}\left[\prod_{\tau=0}^{\tau^*-1} h_{x_Tx_{T_0}}(H_\tau|H_{\tau+1})\right]\NR\stopalign \stopformula \stoptext Mathieu