1 files changed, 3 insertions(+), 1 deletions(-)

M org-syntax.org

@@ 240,7 240,9 @@ the inner elements inside the item.
 Indentation consists of a series of space and tab characters at the
 beginning of a line.  Most elements can be indentated, with the
 exception of [[#Headings][headings]], [[#Inlinetasks][inlinetasks]], [[#Footnote_Definitions][footnote definitions]], and [[#Diary_Sexp][diary
-sexps]].  Indentation is only syntactically meaningful in plain lists.
+sexps]].  Indentation is only syntactically meaningful in plain lists,
+where indentation is calculated assuming that space characters occupy
+a single character and tab characters occupy 8 characters.
 
 The common indentation of all the lines within an element is
 discarded.  This also applies to single-line elements.