I have tried to search for similar question but couldn't find any. So I hope to create a new question here. If I have a variable called "variable1" and run the command "sum variable", then Stata will show the results of "sum variable1" as long as "variable1" is the only variable beginning with "variable" and thus makes no confusion. However, I hope to disable this function and let the Stata return the outcomes only if all the variables in commands are spelled with their full names. Could anyone please let me know how to change this default setting?