Script responsible for cancelling scructure placement?

[SnoWidget]

Quote

if the structure placement is cancelled (RMB), however placing can be done at any later time without additional costs by re-selecting the structure in crafting tabs.

Is what I'm referring to to clarify. I use to have a character mod that could pick up structures in a way similar to cancelling them on craft, however I cannot find it anymore and would like so help in trying to mimic/recreate the means to getting an item to do so.