Nie dalo by kazda funkcje/classe zwijac ? tak jak na obrazku

Nie dalo by kazda funkcje/classe zwijac ? tak jak na obrazku
http://www.zend.com/var/corporate/storage/images/media/images/products/zend_studio/code_folding/6500-1-eng-US/code_folding.gif
http://www.zend.com/var/corporate/storage/images/media/images/products/zend_studio/code_folding/6500-1-eng-US/code_folding.gif