license (available to annual subscribers), you get access to several advanced features not present in the standard Stata 18 release: High-Dimensional Fixed Effects (HDFE):
Stop wrestling with your do-files. Stata 18 is dropping with features we’ve been dreaming of for years. stata 18 exclusive
Stata 18 expands its analytical core with several major additions: license (available to annual subscribers), you get access
Ability to create "Table 1" descriptive statistics and improved Do-file Editor features like autocomplete and code folding. Performance and User Experience New features in Stata 18 license (available to annual subscribers)