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if ($l2 =~ s/..../..../) { # $x and $y munging code # and substitution back into $l2 }
else { warn "houston, we have a problem: $l2 "; }
s!(\d\d)\:(\d\d)\:(\d\d),(\d\d\d) --> (\d\d)\:(\d\d)\:(\d\d),(\d\d\d)! +sprintf("%s;%s;%s;%02.0f %s;%s;%s;%02.0f",$1,$2,$3,$4/10,$5,$6,$7,$8/ +10)!e