Translate SAP Smartforms is explained step by step in the following SAP ABAP tutorials. Note that you have to transport the translation. First, how to navigate to SAP Smartforms translate tools and then how to translate it.
SAP Tcodes workbench : The ABAP Workbench is a collection of tools you use to develop, test and run ABAP programs. The following section is an overview of the tools available for performing different development tasks.