[REQUEST] Build-related scripts

Having joined servers that don't give normal players tools that make building easier, such as precision tool, would there be any way to make building easier through a client script, in a similar way to the "physgun buildmode" script...

http://wenlistools.svn.sourceforge.n..._buildmode.lua

.. that would snap props to a grid as you move them? Although I doubt the client has much control over how the props it spawns in move, anything that saves time would be appreciated ITT.