What does the double plus sign in "seen" line means?

++ 

$ ppi_dumper header.txt |grep "++"
                PPI::Token::Operator    '++'

perl operators are documented in perlop

Re: ppiwx / wxPPI / wxppixregexp xPPIx_Regexp_linecol_onize / PPIx::Regexp::Element::column_number

In reply to Re: What's this line means in HTTP::headers? by Anonymous Monk
in thread What's this line means in HTTP::headers? by anaconda_wly

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