@vindex sieve-mode-syntax-table
Sieve mode is derived from @code{c-mode}, and is very similar except
for the syntax of comments. The keymap (@code{sieve-mode-map}) is
-inherited from @code{c-mode}, as are the the variables for customizing
+inherited from @code{c-mode}, as are the variables for customizing
indentation. Sieve mode has its own abbrev table
(@code{sieve-mode-abbrev-table}) and syntax table
(@code{sieve-mode-syntax-table}).
The Emacs Sieve package implements all or parts of a small but
hopefully growing number of RFCs and drafts documents. This chapter
lists the relevant ones. They can all be fetched from
-@samp{http://quimby.gnus.org/notes/}.
+@uref{http://quimby.gnus.org/notes/}.
@table @dfn