While a new user-written command, chartab, (briefly described and discussed here) may be criticized as a "command looking for a problem to solve," but for anyone who has ever tried to "de-bug" code a quick tabulation of various "characters" can help identify, and thus solve, problems. These problems include, e.g., the letter l for the number 1; the letter O for the number 0 (zero). These problems typically arise in the context of importing data, especially if it involves string data transited via Microsoft Word or Excel. And anyone merging data based on string variables should probably invest some time in some degree of "Unicode due diligence" before hand to help get in front of any potential problems. To install this command:
ssc install chartab
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