howtos/howto_sm_enkf.md

@@ -82,6 +82,11 @@ forward run:
 * Input files or sequential Gaussian simulation (SGSim):
   `sgsim_k_wavereal.par`, `logk_wavereal.dat`
 
+For general information on keywords for EnKF input, see [EnKF Input
+File](../tutorial/enkf_input_file), the [Doxygen documentation of the
+variables](./doxygen) or directly in the source code
+(`/simul/mod_enkf.f90`).
+
 ### Additional input in general input file ###
 
 ### EnKF input file ###