destroy a declared object or function
// declare datastore
declare=lds=ue_datastorevalues
// .. script
// destroy datastore
destroy=lds
// define..
global function helloworld
// script
end global
// startscript
helloworld()
destroy=function helloworld
destroy the variable, which is declared with "setvar"
examle
setvar=ls_var="hello world"
destroy=var=ls_var
messagebox=<ls_var>
display "<ls_var>"
setvar=ls_1=red
setvar=ls_2=blue
setvar=ls_3=green
destroy=varlist=ls_1,ls_3
message=<ls_1> <ls_2> <ls_3>
display "<ls_1> blue <ls_3>"