On Mon, 18 Oct 2010, Henrique Andrade wrote:
 Let me see if I understood correctly:
 (1) With no flags Gretl gives me "static" forecasts inside the sample and
 dynamic ones outside the sample.
      fcast 1972:1 1991:4
 (2) With the option "--dynamic" Gretl uses the *estimated* values to make
 the forecast of the period t+1.
      fcast 1972:1 1991:4 --dynamic
 (3) With the option "--static" Gretl uses the *observed* values to make
 forecast of the period t+1.
      fcast 1972:1 1991:1 --static
 (4) With the option "--out-of-sample" Gretl gives me dynamic forecasts (i.e.
 using estimated values) outside my sample.
 Is this the correct interpretation? 
Yes, that's right.
Allin Cottrell