DELETE from command where "name"='visible';
INSERT INTO command("name", "security", help) values
('visible','1','Syntax: .visible on/off \r\n\r\n Output current visibility state or make GM visible(on) and invisible(off) for other players.');

WARNING:  nonstandard use of escape in a string literal
LINE 6: 'Syntax: .visible on/off \r\n\r\n Output current visibility ...
        ^
HINT:  Use the escape string syntax for escapes, e.g., E'\r\n'.