The Firebird Docs team is calling for people who are fluent in both English and Firebird's SQL to assist with reviewing the English text of the Firebird 2.5 Language Reference manual. Of 10 chapters and 8 Appendices, 4.5 chapters are still untouched by reviewers. It would be good to have the reviewing done to coordinate with the forthcoming 2.5.5 release but correctness takes priority.
Still to do are: half of the DDL chapter, DML, PSQL, Functions and Variables, Transactions.
If you feel able to help with the review, please subscribe to the [firebird-docs] list
here and make yourself and your preferred topics known.