mailing-list for TeXmacs Users

["el.douwen" <address@hidden>]

good evening everybody
sorry for my so simple questions
how to make the infinite symbol ?
i have read in manual, typing simple text, mathematical formulas…  i  
can not find the shortcut for infinite
i had found one day, while searching different combinations.. that  
one shortcut let me have the infinite:
es ist (in math mode) arobase (gives a round, useful for, for  
example, fog, combination of fonctions), then tab (gives infinite)
today, i try this in an other document, and it does not work
while typing arobase in math mode i get a black round, and if i press  
tab i get a black square.

i guess there must be something with fonts here, but i can not really  
understand what.

can anybody explain me ?

Vincent