
2020-09-04:  LB replaced release R7.93 with R7.94
      updated  tocbase.cls    Abstract:  --> Abstract.

2020-09-01:  Alex replaced release R7.92 with R7.93
      updated  tocspecial.tex

2020-08-13:  LB/OR replaced release R7.91 with R7.92
      updated  toc.cls to support "research exposition"
      updated  toc-instructions.tex, toc-template.tex

2019-10-05:  LB/OR replaced release R7.9 with R7.91
      by updating toc.cls and tocforeword.cls
               
2019-09-01:  LB updated tocspecial.tex
