Proc Panel Fixed effects change reference point

[Efthymios]

Hi everyone,

I was wondering whether it is possible to change the reference point when you use proc panel fixone/fixtwo. Which is the default reference point that SAS uses? For example in a panel with 25 cross-sections does SAS use the first or the last cross-section as a reference point? I want to change that so that I test whether the results are altered with different reference points. Any help will be appreciated.