[backcolor=#ffffff]  A  打开光圈表（D码表）[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]F  切换显示线的填充模式（实填充/外形线/中心线）[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]H  所有同类型[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]D码的元素高亮显示[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]N  切换当前层的正片/负片显示[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]Q  查看属性[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]R  刷新[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]S  栅格捕捉开关[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]T  透视显示开关[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]V  栅格显示开关[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]   W  框选[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]Y  打开层设置对话框[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]Z  目标捕捉开关（以光标为中心）[/backcolor][backcolor=#ffffff] [/backcolor][backcolor=#ffffff]   +          放大-          缩小Home       全局显示Esc        结束当前命令（等于鼠标右键）Ctrl N     新建Ctrl O     打开Ctrl S     保存
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