| Most gui type features of Splus are not available. R is not as tightly integrated into Microsoft Office Products as Splus. It is easy to export R graphics files to MS Word and Excel as windows metafiles. |
| attach and detach in R can only be used with dataframes |
| builtin datasets and datasets in libraries must be accessed with the R data function |
| R uses lexical scope. The entire environment is bound together in a workspace. The workspace is a binary file which must be saved with the save or save.image functions. |
| R has superior capabilities for TeX style labelling of plots than Splus2000 or Splus 5 for linux. |
| Some functions in the Splus core such as the time series ones have been moved out to libraries. |
| R runs a little faster than Splus. Due to the workspace design, it might be possible to dramatically increase the speed of R. |