I compared Gretl system with R programing and I found that Gretl system still have many errors, concerning reading dates from csv files.
In R programing , it is very easy to read dates from csv and make all statistics as well as SAS system.
I found also the following link, which contain examples for all statistics and plots.
http://www.mayin.org/ajayshah/KB/R/index.html
I hope Gretl will make the same link, contains examples.
Nabil Brandl
http://nabilnabil.homestead.com