How does LIMIT affect Query Caching

[Reto Baumann]

Does somebody know, how the LIMIT statement does affect the query caching mechanism of 
MySQL 4.x?
Is 
    select * from examples LIMIT 0,30
and
    select * from examples LIMIT 30,30

treated the same, therefore does the caching improve performance or are these queries 
considered to be two sepperate queries?

Thanks for the help
reto