Acls to form conditions

[Sebastien Estienne]

hello,

I want to combine 'and' and 'or' but with grouping:

if cond_1 and (cond_2 or cond_3)

should i do this in 2 steps:

use_backend foor if cond_1 cond_2
use_backend foor if cond_1 cond_3

or can i do this in one line?

thanx,
Sebastien Estienne