[phenixbb] model completion after autobuild

[James Whittle]

Dear all,

AutoBuild has successfully built almost my entire model - I copied  
loops built better in one NCS copy to the other, and now only one 16  
residue loop connecting two helices is missing. It initially built a  
chain through the density for this loop, but could not join it to the  
rest of the structure or place the sequence there, so I deleted it.

When I re-run autobuild on my modified model, rebuild_in_place=True is  
automatically set and this loop is not completed. The density is  
there, so it should be possible.

How does one instruct AutoBuild to finish an almost complete model (in  
particular this loop), without much change to the existing model?

--James