Dear Ishii-san,
> I wonder how your patches apply to non A4 format (letter). Can you
> please share the PDF file in letter format after patching?
I had not mentioned the US letter format before, but the patch also
affects the US letter version.
I attach a PDF of the US letter version created with the following
command after applying the patch.
```
make "XSLTPROCFLAGS= --stringparam rootid functions" postgres-US.pdf
```