Here is an example export script, have a closer look at the $filename directive ...
1: $filename($getEnv('USERPROFILE')'\Desktop\Mp3tag.Report.tagdump.'$replace(%_datetime%,' ','.','-',)'.txt',UTF-8)2: $loop(%path%)'^'
3: $regexp($regexp($list(,': ''',''$char(13)''$char(10)),'\r\n','U+000DU+000A'),'\r_\n','\r\n')'*'
4: $regexp($regexp($listtec(,': ''',''$char(13)''$char(10)),'\r\n','U+000DU+000A'),'\r\n','\r\n')'$'
5: $loopend()
6: 'MP3TAGAPP: '''$getEnv('MP3TAGAPP')''
7: 'MP3TAGAPPDATA: '''$getEnv('MP3TAGAPPDATA')''
DD.20140619.0753.CEST