Destroy building under construction?

[Ihmhi]

I've been placing Stone Walls, but I realized I made a mistake and I've been placing *end points* everywhere. -.-

How can i remove these? I've already built them a little bit, with just one piece of stone each. V > Y (Destroy) takes a really long time and I've yet to destroy one... ^.^'

[Pjotr84]

As soon as you've partly built anything, then yes, you just have to destroy the sign.

[Ihmhi]

Is it going to have a much hit points as the completed building? 'cause Stone Walls are kinda tough and all that... ;_;

[Ihmhi]

Anyone? I'm stuck with like 10 corner posts under construction and I can't seem to be able to destroy them...