@Section
    @Title { Indenting and struts }
    @Tag { tbl_inde }
@Begin
@PP
By default, entries appear at the left within cells, not counting the
cell margin.  The @Code indent option causes entries to be indented
horizontally.  For example,
@ID @OneRow @Code "@Cell indent { ctr }"
horizontally centres the entry within the cell.  The other possible values
centred.entries @Index { centred entries in tables }
right.justified.entries @Index { right justified entries in tables }
of this option are {@Code "left"}, {@Code "right"}, or any length (for
example, {@Code 2f}) meaning that much indent.
@PP
There is a corresponding @Code "indentvertical" option for vertical indenting
within the cell.  It takes the same values except that @Code "left" is
renamed {@Code "top"}, and @Code "right" is renamed {@Code foot}.
A common problem with vertical placement is that words that lack
ascenders (parts of letters that rise up) or descenders (parts that
sink down) can easily become misaligned with words that
don't.  Looking at
@CD @Tbl
    aformat { @Cell A | @Cell B | @Cell C }
    marginvertical { 0i }
{
@Rowa
    A { resume }
    B { poppy }
    C { title }
}
which is the result of
@ID @OneRow @Code @Verbatim {
@Tbl
    aformat { @Cell A | @Cell B | @Cell C }
{
@Rowa
    A { resume }
    B { poppy }
    C { title }
}
}
we see that the words are aligned correctly despite the absence of
ascenders from the first two words, and of descenders from the first
and last; and this despite the fact that these words are vertically
placed at the top of the cell.  This is because by default
@Code "@Tbl" adds a @I { vertical strut } to each entry:  an invisible
object of zero width and height {@Code "1f"}, which covers for any absent
ascenders and descenders.  The option
@ID @OneRow @Code "@Cell strut { no }"
can be used to remove the strut; other acceptable values for this
option are {@Code yes} (the default value), and any length, which will
add a strut of that length.
@PP
For completeness there is a corresponding @Code "struthorizontal" option; it
takes the same values, its default value is {@Code no}, and it unlikely
ever to be used.
@End @Section
