Create an autonumbered chunk, i.e. a string
representation of a sequence, each item will be numbered.
These runs can also be bookmarked and be used later for
cross references.
bookmark id to associate with autonumber run. If NULL, no bookmark
is added. Value can only be made of alpha numeric characters, '-' and '_'.
bkm_all
if TRUE, the bookmark will be set on the while string, if
FALSE, the bookmark will be set on the number only. Default to FALSE.
As an effect when a reference to this bookmark is used, the text can
be like "Table 1" or "1" (pre_label is not included in the referenced
text).