<suggestion of using ' for prime sniped>
> hmm, yes it does.  Yesterday it was causing errors, but it seemed 
> horribly confused in general.
> 

Was this due to attemtoing constrcutions along the lines of x^2'', which
probably makes TeX complain about a double subscript (in addition to presumably
being the wrong thing, etc)? If you really do want this you have to use either
x^{2\prime\prime} (based on knowledge about ') or more natural constructs 
along the lines of {x^2}'' or x^2{}''.

I am not sure what happens if you try x''_2^2 but think that may also hit 
trouble (x''^2_2 works fine). My thunks would be that you proably either want 
{x_2'')^2 or {x_2^2}'' anyway (note the non-redundant cruly brackets).

Naive users could be confused by imganing that ' is a simple math character. 
Actually it is a macro, in math mode, which recognises what is next and does 
the right thing. If you type x''^2 then your ^ magically disappears and you 
get one superscript contianing \prime\prime 2---plain LaTeX users could be 
excused for not appreciating this fact.

-- 
Duncan (-:
"software industry, the: unique industry where selling substandard goods is
legal and you can charge extra for fixing the problems."


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