Informix LIMIT Clause

Informix has a proprietary specification of LIMIT clauses, via the FIRST and SKIP keywords:

SELECT FIRST 5 SKIP 20 * FROM mytable WHERE a = 1 ORDER BY b;

In comparison MySQL uses the following syntax:

SELECT * FROM mytable WHERE a = 1 ORDER BY b LIMIT 5 OFFSET 20;

I don't know that one is better than the other, but this is for reference.