PC How do I use the Developer tool: Admin Block Replacement tool

[lil_joha]

I am working on a poi in creative mode  and came across the  Admin: block replace tool.  I can not figure out how it is used. Other than replacing block with air,  replacing alll simlar blocks with air.      I would like to replace the broken windows with solid ones.  or.. maybe the wooden blocks with concrete or steel.

 

[PoloPoPo]

I have never used it and I am not sure if I know exactly what you mean but JaWoodle used something to replace blocks in one of his videos I have watched recently:

Block replacement action starts at 18:30 min. If this is not what you mean then sorry.

 

[lil_joha]

Thank you that was helpful.  Now to get those windows done.