one particular shortcut i use all the time is when i need to comment out certain lines (which are not contiguous)

map @ I#  ^[j
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This makes it possible to add the # sign at the beginning of the line,regardless of where the cursor is on the line) using the @ sign
Since I need to write database-related code, these shortcuts also come in handy

ab sd  $sth = $dbh->prepare($sql);
ab se  $sth->execute
ab sa  $sth->fetchrow_hashref;
ab ss  $sth->finish;
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