set var1 "The";
set var2 "pesky";
set var3 "feline";
set var4 "sat,";
set var5 "for what is hopefully the last time,";
set var6 "on the mat.";
set longvar var1 + SPACE;
append longvar var2 + SPACE + var3 + SPACE + var4 + SPACE;
append longvar var5 + SPACE + var6 + NEWLINE;
list;
exit;