Hi, chemical structures and reactions produce wrong results. Here is one example from the wiki and two from the manual. \starttext %% does not typeset the reaction, prints the commas, wrong spacing %% and no arrow \startformula \chemical{2H_2,+,O_2,->,2H_2O} \stopformula %% same here, GIVES is not interpreted \startformula \chemical{A,GIVES,B,EQUILIBRIUM,C,MESOMERIC,D} \stopformula %% wrong alignment, rules overlay symbols \startformula \setupchemical [width=fit, height=fit, scale=small, size=small] \startchemical \chemical[ONE,Z0,DB1,SB46,MOV1,Z0,SB28][C,C] \stopchemical \startchemical \chemical[SPACE,PLUS,SPACE] \stopchemical \startchemical \chemical[ONE,Z0,SB146,Z6][N,H] \stopchemical \startchemical \chemical[SPACE,GIVES,SPACE] \stopchemical \startchemical \chemical[ONE,Z07,SB1357,MOV1,Z0,SB27,PB:Z2,ONE,Z0,SB13,PE][C,H,C,N] \stopchemical \stopformula \stoptext Am I missing something? Is this mechanism not supported any more or just broken? Marco