valu chang list select event lse lse valu adjust object sel per perspect list select valu load librari object sel rule rule librari list select valu renam text field set enabl sel per remov perspect button set enabl sel per duplic perspect button set enabl sel per button set enabl perspect list select index button set enabl sel per perspect list select index perspect list model size sel per renam text field set text sel per explor perspect per explor perspect sel per perspect rule list model clear perspect rule rule per list perspect rule list model insert element rule sort list model perspect rule list add rule button set enabl sel per sel rule updat rule label 