RED_CONV : conv
ADD_CONV AND_CONV BEQ_CONV COND_CONV DIV_CONV EXP_CONV GE_CONV GT_CONV IMP_CONV LE_CONV LT_CONV MOD_CONV MUL_CONV NEQ_CONV NOT_CONV OR_CONV PRE_CONV SBC_CONV SUC_CONV
#RED_CONV "(2=3) = F";; |- ((2 = 3) = F) = ~(2 = 3) #RED_CONV "15 DIV 13";; |- 15 DIV 13 = 1 #RED_CONV "100 + 100";; |- 100 + 100 = 200 #RED_CONV "0 + x";; evaluation failed RED_CONV