Hi, My guess is that flag actually refers to atflags. Comments? OK?
Index: chflags.2 =================================================================== RCS file: /cvs/src/lib/libc/sys/chflags.2,v retrieving revision 1.27 diff -u -p -r1.27 chflags.2 --- chflags.2 19 Jan 2015 15:54:11 -0000 1.27 +++ chflags.2 25 Mar 2019 20:38:23 -0000 @@ -113,12 +113,12 @@ in the .Fa fd parameter, the current working directory is used. If -.Fa flag +.Fa atflags is also zero, the behavior is identical to a call to .Fn chflags . .Pp The -.Fa flag +.Fa atflags argument is the bitwise OR of zero or more of the following values: .Pp .Bl -tag -width AT_SYMLINK_NOFOLLOW -offset indent -compact
