try

.vs/VSWorkspaceState.json

@@ -2,5 +2,6 @@
   "ExpandedNodes": [
     ""
   ],
+  "SelectedNode": "\\gc10_GrassGrowth.R",
   "PreviewInSolutionExplorer": false
 }
\ No newline at end of file

gc10_GrassGrowth.R

@@ -4,7 +4,7 @@
 ## 25 April 2023, Wageningen
 ##
 
-rm(list=ls()) # will remove ALL objects in memory
+rm(list=ls()) # will remove ALL objects in memory 
 
 # select the correct working directory
 setwd("~/Library/CloudStorage/Dropbox/Stats/R/GrassCLIPS")