*trace-indent-width*
is the extra amount by which the traced output for function calls is indented upon entering a deeper level of nesting (that is, a traced call from a function that is itself traced). If it is 0 then no indentation occurs.
CL-USER 1 > (setq *trace-indent-width* 4
*max-trace-indent* 50)
50
CL-USER 2 > (defun quad (a b c) (- (* b b) (* 4 a c)))
QUAD
CL-USER 3 > (trace quad *)
(QUAD *)
CL-USER 4 > (quad 4 3 14)
0 QUAD > ...
>> A : 4
>> B : 3
>> C : 14
1 * > ...
>> SYSTEM::ARGS : (3 3)
1 * < ...
<< VALUE-0 : 9
1 * > ...
>> SYSTEM::ARGS : (4 4 14)
1 * < ...
<< VALUE-0 : 224
0 QUAD < ...
<< VALUE-0 : -215
-215
LispWorks User Guide and Reference Manual - 21 Dec 2011