How-to-SETTE-test-MEDUSA..md

@@ -11,12 +11,12 @@ We will continue to do it by hand with MEDUSA, at least for now, but of course,
 
 when adding `MEDUSA` to nemo using `add_msa_to_nemo`, all necessary MEDUSA files and bit of scripts are automatically added in the `nemo/sette` directory.
 it enables to test different MEDUSA and non-MEDUSA configurations :    
-* `ORCA2_MEDUSA`      : Normal MEDUSA- online   
-* `ORCA2_OFF_MEDUSA`  : MEDUSA Offline
-* `ORCA2_MED_OFF_TRC` : CFCs and C14 Offline (No-MEDUSA)
-* `ORCA2_MED_NO_TOP`  : NEMO-ice without passive tracers
-* `C1D_MED_PAPA`      : NEMO-MEDUSA 1D 
-* `ORCA2_PAC_MED`     : MEDUSA-PAC online 
+* **`ORCA2_MEDUSA`**      : Normal MEDUSA- online.   
+* **`ORCA2_OFF_MEDUSA`**  : MEDUSA Offline (the ocean circulation is read - not calculated).
+* **`ORCA2_MED_OFF_TRC`** : CFCs and C14 Offline (No-MEDUSA) - make sure NEMO and other passive tracers still run without MEDUSA -- nothing has been broken by the new dev outside of MEDUSA.
+* **`ORCA2_MED_NO_TOP`**  : NEMO-ice without passive tracers - make sure NEMO runs
+* **`C1D_MED_PAPA`**      : NEMO-MEDUSA 1D - make sure the 1D version runs (can be very useful for new developments)
+* **`ORCA2_PAC_MED`**     : MEDUSA-PAC online - PAC stands for `Particle-Associated Copepods` - a modified version of MEDUSA with additional copepods impacting the sinking particles scheme. 
 
 when available we'll add a river-nutrients config to be tested.