If your Web browser can't display the "™" correctly - it is supposed
to show up as a marker - get yourself a decent browser
that does support the standard.
Other nice signs & symbols are:
<!ENTITY emsp SDATA "[emsp ]" -- em space [X X] -->
<!ENTITY ensp SDATA "[ensp ]" -- en space (1/2-em) [X X] -->
<!ENTITY mdash SDATA "[ndash]" -- em dash [X—X] -->
<!ENTITY ndash SDATA "[ndash]" -- en dash (1/2-em) [X–X] -->
<!ENTITY nbsp SDATA "[nbsp ]" -- non breaking space [X X] -->
<!ENTITY shy SDATA "[shy ]" -- soft hyphen [XX] -->
<!ENTITY copy SDATA "[copy ]" -- copyright sign [X©X] -->
<!ENTITY trade SDATA "[trade]" -- trade mark sign [X™X] -->
<!ENTITY reg SDATA "[reg ]" -- registered sign [X®X] -->
(Oh, fuck! I just tested them on the very holier-than-thou Arena 0.95b
itself [in case you don't know - this is the HTML-3 test-bed browser
supposed to implement the very latest standard], and even she doesn't get them all right. There
may be a font problem, but a broswer should be able to substitute
combinations or alternatives for symbols of known semantics. It is not
that hard to implement a rational approximation to
differently-sized spaces and dashes. This is no rocket-science!)