块注释/反块注释:Ctrl+4/5 行注释/反行注释:Ctrl+1 代码提示:Tab 复制一行:Ctrl+Alt+↓/↑ 删除一行:Ctrl+D 运行:F5 全屏:F11 撤销:Ctrl+Z 反撤销:Ctrl+Y 之后慢慢加