| pipe symbol <alt>7
backslash <alt><shift>7 = <alt>/
[ left (opening) square bracket <alt>5
] right (closing) square bracket <alt>6
{ left (opening) curly bracket <alt>8
} right (closing) curly bracket <alt>9
~ Tilde <alt>n followed by the space key
@ “At” symbol <alt>g (lowercase G)
如何测试一切正常