I am testing Xcas online
first reports
tested on firefox and g-chrome
a:="hello"; type(a) [↵] hello", strin // the g char are not displayed
suggestion:
the pop-up box,
www-fourier.ujf-grenoble.fr says
Computations would be faster with Firefox.
show it at the end of loading the kernel, It's a bit annoying pop-ups
or better to show in the status bar,