diff --git a/src/lang/welsh.txt b/src/lang/welsh.txt
--- a/src/lang/welsh.txt
+++ b/src/lang/welsh.txt
@@ -1605,13 +1605,13 @@ STR_CONFIG_SETTING_LOCALISATION_UNITS_HE
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_METRIC             :Metrig (m)
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_SI                 :SI (m)
 
-STR_CONFIG_SETTING_GUI                                          :{ORANGE}Rhyngwyneb
+STR_CONFIG_SETTING_INTERFACE                                    :{ORANGE}Rhyngwyneb
 STR_CONFIG_SETTING_LOCALISATION                                 :{ORANGE}Unedau Lleol
-STR_CONFIG_SETTING_CONSTRUCTION                                 :{ORANGE}Adeiladu
+STR_CONFIG_SETTING_INTERFACE_CONSTRUCTION                       :{ORANGE}Adeiladu
 STR_CONFIG_SETTING_VEHICLES                                     :{ORANGE}Cerbydau
 STR_CONFIG_SETTING_STATIONS                                     :{ORANGE}Gorsafoedd
 STR_CONFIG_SETTING_ECONOMY                                      :{ORANGE}Economi
-STR_CONFIG_SETTING_LINKGRAPH                                    :{ORANGE}Dosraniad Cargo
+STR_CONFIG_SETTING_ENVIRONMENT_CARGODIST                        :{ORANGE}Dosraniad Cargo
 STR_CONFIG_SETTING_AI                                           :{ORANGE}Cystadleuwyr
 STR_CONFIG_SETTING_DISPLAY_OPTIONS                              :{ORANGE}Dewisiadau dangos
 STR_CONFIG_SETTING_INTERACTION                                  :{ORANGE}Rhyngweithio
@@ -1623,8 +1623,8 @@ STR_CONFIG_SETTING_VEHICLES_AUTORENEW   
 STR_CONFIG_SETTING_VEHICLES_SERVICING                           :{ORANGE}Gwasanaethu
 STR_CONFIG_SETTING_VEHICLES_ROUTING                             :{ORANGE}Llwybro
 STR_CONFIG_SETTING_VEHICLES_TRAINS                              :{ORANGE}Trenau
-STR_CONFIG_SETTING_ECONOMY_TOWNS                                :{ORANGE}Trefi
-STR_CONFIG_SETTING_ECONOMY_INDUSTRIES                           :{ORANGE}Diwydiannau
+STR_CONFIG_SETTING_ENVIRONMENT_TOWNS                            :{ORANGE}Trefi
+STR_CONFIG_SETTING_ENVIRONMENT_INDUSTRIES                       :{ORANGE}Diwydiannau
 
 STR_CONFIG_SETTING_PATHFINDER_OPF                               :Gwreiddiol
 STR_CONFIG_SETTING_PATHFINDER_NPF                               :NPF