I am trying to use the libreoffice formula editor to add some formulae to drawings in libreoffice draw.
However, whenever I want to enter a formula that LO thinks is wrong it places an ugly upside-down question mark or a box with nothing in it.
MWE:
%sigma^+
I want to denote the light polarization to be right-circular polarized, hence there should be nothing behind the + sign. However, LO decides a + sign should be followed by something and adds in an ugly placeholder.
In LATEX I would write
\sigma^+
and be done.
How do I get rid of the placeholder?
You should type it with double quotes, that is
%sigma^"+".