Lamenting the lost math panel

[Paul A. Rubin]

All told, I'm ok with replacing the math panel with menu entries, drop 
down lists, tool buttons, whatever.  In 1.5.0beta3, I can find how to 
insert delimiters (and a variety of other stuff), but where did the 
arrows and other symbols go?  Or are we now required to remember the 
LaTeX commands for them?  (In general, the word "remember" is anathema 
to me.)

/Paul