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Devel::TraceFuncs provides utilities to trace the
execution of a program. It can print traces that look
something like:
+-> global: '0'
| +-> main::fo(4, 5) (in ./t.pm:32): 'now then'
| | +-> main::fp(4, 5) (in ./t.pm:19)
| | | +-> main::fq() (in ./t.pm:13)
| | | | que pee doll (in ./t.pm:8)
| | | +-< main::fq() (in ./t.pm:13)
| | | cee dee (in ./t.pm:14)
| | +-< main::fp(4, 5) (in ./t.pm:19)
| | ha
| | hs (in ./t.pm:20)
| +-< main::fo(4, 5) (in ./t.pm:32): 'now then'
| done (in ./t.pm:34)
+-< global: '0'
|
