/usr/share/polygen/eng/debian/thanksforpackaging.grm is in polygen-data 1.0.6.ds2-14build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | I ::= "title: Thanks for packaging...\n"
^ "author: Enrico Zini <enrico@debian.org>\n"
^ "language: english\n"
^ "status: basic\n"
^ "topic: Debian\n"
^ "created: 2005-09-15"
;
S ::= \ Phrase ^ ( "." | -"!" );
Phrase ::= + Thanks "for" Packaging "PACKAGE"
| Thanks "for" [all] "your" (work | efforts) "on PACKAGE"
| "You did great" [work] "on PACKAGE"
;
Thanks ::= (kudos | [many] thanks) ;
Packaging ::= packaging | taking care of | your (work | [continued] efforts) on ;
|