Random Open Bolt Hole in side of Cylinder Head

Greetings all - lifted the bonnet to replace the rocker cover gasket (amongst other things) on my 2005 1.6. I noticed that there is a bolt hole…without a bolt in it and wondered what the deal was. Looks like it really should have a bolt in (I think it’s M10 but ready to be corrected). Didn’t take a photo of my actual engine but attached is a similar engine pic. It’s showing as open on here so I am yet more intrigued (it’s the one below and to the right of the breather pipe).

Cheers and thanks in advance for any info!

 

Random Bolt

Its open on all of them. Probably to allow attachment of a tool during assembly.

Quit worrying about it.

Ok great - thanks.