I know that "--" has been the single-line comment identifier since SQL was implemented by IBM on mainframes using Hollerith cards. Today, some RDBMSs also allow the C comment indentifier pair, /* ... */. The postgres10 manual when searched for 'comments' presents the double hyphens and, in Section 4.1.3, on the top line of page 39, I read that "-- and /* cannot appear anywhere in an operator name, since they will be taken as the start of a comment." I want only to confirm that I can use /* ... */ for multiline comments in my DDL and DML scripts. TIA, Rich