@cindex end (of buffer)
@cindex region
-Conceptually, a @dfn{buffer} is just a string of ASCII characters and two
+Conceptually, a @dfn{buffer} is just a string of @acronym{ASCII} characters and two
special characters @key{PNT} (@dfn{point}) and @key{MRK} (@dfn{mark}) such
that the character @key{PNT} occurs exactly once and @key{MRK} occurs at
most once. The @dfn{text} of a buffer is obtained by deleting the
@item m @var{ch}
@kindex 155 @kbd{m} (@code{vip-mark-point})
Store current point in the register @var{ch}. @var{ch} must be a
-lower-case ASCII letter.
+lower-case @acronym{ASCII} letter.
@item m <
Set mark at the beginning of current buffer.
@item m >