15.72.16  CASE 

Controls the format of the title.  It must be the next command  after  the
TITLE  or  MORE  command  or  on the same line with the TITLE command.  It
modifies only the preceding string.  It must immediately follow the string
either on the same, or the next line.

     CASE 'case_text'

This  specifies  the case or character type of each character in the title
text.  For the definitions of all possible CASE characters see:
     TOPDRAWER FONTS

It is not necessary to use a case command if you only want upper and lower
case ASCII characters.  Simply type them into your title as  you  wish  to
see them.

                                  example
     TD:TITLE TOP 'ABG' CASE 'GGG'
Produces a title with 3 lower case Greek letters alpha,beta,gamma.
     TD:TITLE TOP 'ABC' 'ABG' CASE 'GGG'
Produces a title with 3 Roman letters followed by 3 Greek letters. 
     TD:TITLE TOP 'S=' CASE 'G' V_SUM
Produces a Greek "Sigma".
     TD:TITLE TOP 'S=' V_SUM CASE 'G'
Does  not produce any Greek because the case and string are separated by a
lexical.