slib_lang_exists_tmp=yes

slib_title=Comparing chemical equations
slib_parms=4\
 , the student's equation \
 , a correct equation \
good , message if OK \
bad , message if not OK

slib_out= a message (which defaults to <span class="tt">good</span> or <span class="tt">bad</span>).
slib_comment=Enter chemical equations as accepted by the command chemeq