Three dots

  What is the difference between \textellipsis and ldots? I've used the
\former and they want the latter. In my copy of The Comprehensive LaTeX
Symbol List, I find \textellipsis in Table 3: Predefined LaTeX Text-Mode
Commands and \ldots in Table 2. Do these typeset differently and noticeably?
Just curious.

Rich

-- 
Dr. Richard B. Shepard, President
Applied Ecosystem Services, Inc. (TM)
<http://www.appl-ecosys.com>