Workspace files in SAS Studio enable you to specify files that are going to be opened on startup. This is helpful when working across different projects where you need context, certain programs or context files to be available to enable you to collaborate better or be ready to work faster.
SAS Communities article on Workspaces: https://communities.sas.com/t5/SAS-Communities-Library/SAS-Studio-Workspaces-Your-Project-Based-Productivity-Booster/ta-p/979846
SAS Snippets shown in the Video: https://github.com/Criptic/sas_snippets/tree/master/Snippets#workspace-snippets
SAS Documentation on Workspaces: https://go.documentation.sas.com/doc/en/sasstudiocdc/default/webeditorcdc/webeditorug/n0uc8cc3mvz0o2n101l56nb8x7t8.htm?requestorId=65dd8777-15be-42ea-a252-c19bacbb2b4c