E1:     C1 CALL pred multi_parameter.main/2-0 (det) multi_parameter.m:31
mdb> echo on
Command echo enabled.
mdb> context nextline
Contexts will be printed on the next line.
mdb> 
      E2:     C2 CALL pred multi_parameter.foo/2-0 (det)
                         multi_parameter.m:40 (from multi_parameter.m:32)
mdb> print *
       X (arg 1)              	'z'
mdb> 
      E3:     C3 CALL pred multi_parameter.a/2-0 (det)
                         multi_parameter.m:23 (from multi_parameter.m:41)
mdb> print *
       HeadVar__1             	'z'
mdb> 
      E4:     C4 CALL pred multi_parameter.ClassMethod_for_multi_parameter__m____character__arity0__int__arity0______multi_parameter__a_2/2-0 (det)
                         multi_parameter.m:28 (from multi_parameter.m:23)
mdb> print *
       HeadVar__1             	'z'
mdb> 
      E5:     C5 CALL pred char.to_int/2-0 (det)
                         char.m:NNNN (from multi_parameter.m:28)
mdb> print *
       Character (arg 1)      	'z'
mdb> 
      E6:     C5 EXIT pred char.to_int/2-0 (det)
                         char.m:NNNN (from multi_parameter.m:28)
mdb> print *
       Character (arg 1)      	'z'
       Int (arg 2)            	122
mdb> 
      E7:     C4 EXIT pred multi_parameter.ClassMethod_for_multi_parameter__m____character__arity0__int__arity0______multi_parameter__a_2/2-0 (det)
                         multi_parameter.m:28 (from multi_parameter.m:23)
mdb> print *
       HeadVar__1             	'z'
       HeadVar__2             	122
mdb> 
      E8:     C3 EXIT pred multi_parameter.a/2-0 (det)
                         multi_parameter.m:23 (from multi_parameter.m:41)
mdb> print *
       HeadVar__1             	'z'
       HeadVar__2             	122
mdb> continue -S
122