ToC entries in a single line

Is it possible to format a Table of Contents in Writer that lists sub-entries without page numbering, in a single line?

Example: http://hebrewbooks.org/pagefeed/hebrewbooks_org_53838_9.pdf

I already succeeded in removing page numbering using the “Entries” tab. Now I would like to replace the separator to be a bullet (for example) instead of a newline.