in fasm.txt the sample code for display directive is as follows:
bits = 16
display 'Current offset is 0x'
repeat bits/4
d = '0' + $ shr (bits-%*4) and 0Fh
if d > '9'
d = d + 'A'-'9'-1
end if
display d
end repeat
display 13,10

noticed that fasm thought and have higher predence than shr,so should it more correct to write as?
d = '0' + ($ shr (bits-%*4)) and 0Fh

'shl' and 'shr' are priority 4, 'and', 'or' and 'xor' are priority 3. So 'shr' is higher prioity than 'and'.

oh,sorry,I get the priority table with those tables see normally in c/c++,without carefully notice that the table seq is reverse from those.
a stupid mistake...

Hmm, but why is it so...shouldn't "the first priority" be the highest one