What is expected for "pkg check -ma 2>&1 | less" results?

When I just tried:

# pkg check -ma 2>&1 | less

for the first time . . .

) There are extensive "[mtime]" differences. I'll not show the various
time combinations here.

) There are extensive [uname] ??? -> SOME-USER-NAME differences, the
"???" being literal.

) There are extensive [perm]  --------- -> SOME-PERMISSIONS differences,
the "---------" being literal.

) There are lots of [symlink] ??? -> SOME-PATH, the "???" being literal.

) There are various [fflags] ??? -> schg differences, the "???" and
"schg" both being literal.

) There are various [gname] ??? -> SOME-GROUP-NAME differences, the
"???" being literal.

For reference:

# pkg -v
2.7.4


-- 
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Mark Millard
marklmi at yahoo.com