I spent some hours scratching my head trying to get tables out with vertical lines, until Jambunathan suggested that I try not to put space between the '<' and '>' The patch adds a few words to the org.texi file to that effect.
WARNING: Ive never given a patch before! Nor used texi Rusi
diff --git a/doc/org.texi b/doc/org.texi index cc195d1..5259312 100644 --- a/doc/org.texi +++ b/doc/org.texi @@ -2267,7 +2267,8 @@ of columns, much like horizontal lines can do for groups of rows. In order to specify column groups, you can use a special row where the first field contains only @samp{/}. The further fields can either contain @samp{<} to indicate that this column should start a group, -@samp{>} to indicate the end of a column, or @samp{<>} to make a column +@samp{>} to indicate the end of a column, or @samp{<>} (no space between @samp{<} +and @samp{>}) to make a column a group of its own. Boundaries between column groups will upon export be marked with vertical lines. Here is an example: