(Conditional Executability, Numeric Modes):
These days the sticky bit is more often uses as the restricted
deletion flag, so modernize the discussion about this.
(Mode Structure): Linux/GNU -> GNU/Linux.
(Symbolic Modes): Don't imply that "+ur" or "u" is valid.
(Setting Permissions): Don't imply that "+t" is invalid.
Use "rwx" rather than the less-common "rxw" in an example.
(Copying Permissions): Say that ugo is a replacement for
a string of the other letters. Add spaces around examples.
Use "set-user-ID" rather than "set user ID" to avoid ambiguity.
Use "+t" rather than "o+t", since POSIX doesn't specify the latter.
Mention which combinations are portable and which are GNU.
(Numeric Modes): Don't imply they aren't portable; they are
nowadays.
since it now works the same regardless of POSIX version.
(od invocation): -w N -> -w[N].
(pr invocation): -S STRING -> -SSTRING.
(fold invocation): -WIDTH works even when conforming to POSIX
1003.1-2001.
(head invocation, tail invocation): Likewise for -NUM.
(split invocation): Likewise for -LINES.
(uniq invocation): Likewise for -N.
(expand invocation, unexpand invocation): Likewise for -TAB.
(nice invocation): Likewise for -ADJUSTMENT.
(sort invocation): Clarify explanation of +N option.
(uniq invocation): Likewise.
(join invocation): Remove special case for --help, --version.
(touch invocation): Clarify explanation of date options.
(Options for date): -I timespec -> -I[timespec].
the point of departure for -m, and explain what it meeams.
(mkdir invocation, mkfifo invocation, mknod invocation):
The umask does not affect the point of departure.
(chgrp invocation, basename invocation, dirname invocation):
Add examples, which are copies of the examples newly added
to the usage messages.
(ln invocation): Use same format as other examples above,
for consistency.
clear tha the default date use space-padded day of month.
Replace "directive" with "conversion specifier" to be consistent
with POSIX. All uses changed.
Fix menu RHS to match actual directive lists.
(Time conversion specifiers): Renamed from Time directives.
Use @samp consistently, sometimes instead of @code.
Consistently ention which specifiers are GNU extensions.
Give more examples (in some cases, instead of ranges).
Say why %F is preferred for dates.
(Date conversion specifiers): Renamed from Date directives.
Likewise for other changes.
(Padding and other flags): Correct the description.
Document #. Give an example for %9B.
GNU extensions.
For %p and %P, mention handling of noon and midnight.
For %s, use ISO 8601, and mention handling of leap seconds.
For %S, clarify mention of leap seconds.
For %T, say that it's the same as %H:%M:%S.
For %X, don't say that it must be the same as %H:%M:%S.
For %z and %Z, clarify which time zones are used. These options
are now affected by --date, so don't claim that they're not.
(Date directives): %C is now all but the last two chars of %Y.
For %D, say that it's equivalent to %m/%d/%y.
For %e, use blank in example.
For %h, use @code for %b.
For %Y, mention what happens with outlandish years.
(Padding and other flags): Renamed from Padding.
Mention that the flags are GNU extensions.
Mention the 0 and ^ flags.
Mention field widths an modifiers.
(Examples of date): - is a flag, not a modifier.
