XFT
The quickest way to show/hide xrefs.
Turn off an xref by click it, then turn it on/off by enter twice.
INTRODUCTION
Command: XFT
Select xref block to turn it off,
or right click to switch the display of previous selected xref:
If XFT is used the first time in the drawing, by clicking an xref block, it will unload it.
If an xref has been unloaded by XFT before, by enter command XFT again and right click (or press Enter, Spacebar on keyboard), it will reload that xref.
If an xref has been reloaded by XFT before, by enter command XFT again and right click (or press Enter, Spacebar on keyboard), it will unload that xref.
It is very useful when you need unload and reload an xref frequently to compare xrefed background and current drawing.
NOTES
In old AutoCAD version prior to 2009, if the xref block name has some special characters such as "[" and "]", it may not work properly.
UPDATES
2012-11-02 Compatible with AutoCAD 2012 and later version