Can't make sense out of this Perl code -

this snippet reads file line line, looks like:

album=in between dreams interpret=jack johnson titel=better titel=never know titel=banana pancakes album=pictures interpret=katie melua titel=mary pickford titel=it's in head titel=if lights go out album=all lost souls interpret=james blunt titel=1973 titel=one of brightest stars 

so somehow connects "interpreter" album , album list of titles. don't quite how:

while ($line = <in>) {     chomp $line;     if ($line =~ /=/) {         ($name, $wert) = split(/=/, $line);     }     else {         next;     }     if ($name eq "album") {         $album = $wert;     }     if ($name eq "interpret") {         $interpret = $wert;         $cd{$interpret}{album} = $album; // assigns album interpreter?         $titelnummer = 0;     }     if ($name eq "titel") {         $cd{$interpret}{titel}[$titelnummer++] = $wert; // assigns titles interpreter - wtf? how can work?     } } 

the while loop keeps running , putting current line $line long there new lines in file handle <in>. chomp removes newline @ end of every row.

split splits line 2 parts on equal sign (/=/ regular expression) , puts first part in $name , second part in $wert.

%cd hash contains references other hashes. first "level" name of interpreter.

(please ask more specific questions if still not understand.)