FROM /sys IMPORT
   apndl,apndr,apply,assoc,cat,distl,distr,dropl,dropr,explode,id,implode,
   iota,length,patom,pick,repeat,reverse,takel,taker,tl,tlr,trans;

FROM /math/arith IMPORT
   +,-,*,%,add1,arccos,arcsin,arctan,cos,div,exp,ln,
   max,min,mod,minus,power,prod,sin,sqrt,sub1,sum,tan;

FROM /math/logic IMPORT
   <,<=,=,~=,>=,>,~,and,all,any,atom,boolean,false,longer,member,null,
   numeric,odd,or,pair,shorter,xor; 

