Clarity for DISCON.IN use

README.md

@@ -28,9 +28,9 @@ make install
 A dynamic link library will be compiled into the directory with the title `libdiscon.*`, where the file extension is `.so`, `.dll`, or `.dylib`, depending on the user's operating system.  
 
 ## Running ROSCO
-A few files are needed to run ROSCO. Of course, the compiled binary, named `libdiscon.*` by default, is needed. In addition to the binary, a controller input file title DISCON.IN is necessary. Two example input files are provided for the NREL 5MW and DTU 10MW wind turbine controllers in the [parameter_files](parameter_files) folder. For generic controller tuning methods, and an automated writing of this DISCON.IN file, we point you to the complete [ROSCO_toolbox](https://github.com/nrel/rosco_toolbox). 
+A few files are needed to run ROSCO. Of course, the compiled binary, named `libdiscon.*` by default, is needed. In addition to the binary, a controller input file title DISCON.IN is necessary. Two example input files are provided for the NREL 5MW and DTU 10MW wind turbine controllers in the [parameter_files](parameter_files) folder. Note that DISCON.IN must be in the folder that the compiled binary is being called from. For generic controller tuning methods, and an automated writing of this DISCON.IN file, we point you to the complete [ROSCO_toolbox](https://github.com/nrel/rosco_toolbox). 
 
-In addition to DISCON.IN, if you wish to use either of the wind speed estimators offered by ROSCO (`WE_mode > 0`), you will need a rotor performance input file. This is, again, provided for the NREL 5MW and DTU 10MW wind turbines, and can be easily made for other turbines using the [ROSCO_toolbox](https://github.com/nrel/rosco_toolbox). 
+In addition to DISCON.IN, if you wish to use either of the wind speed estimators offered by ROSCO (`WE_mode > 0`), you will need a rotor performance input file. This is, again, provided for the NREL 5MW and DTU 10MW wind turbines, and can be easily made for other turbines using the [ROSCO_toolbox](https://github.com/nrel/rosco_toolbox). The input `PerfFileName` in DISCON.IN points to this file. 
 
 ## Using ROSCO for Bladed
 If you want to use the controller with DNV GL Bladed v4.5 or earlier (which still has support for the DISCON external controller interface), do the following: