ISPSoft User Manual The POU can not be recovered after it is deleted. The POU will be deleted from the project after OK is clicked. If the POU deleted is a POU of the program type, they system will also delete it from the task section. POU Multi-deletions are also supported. Right-click “Programs” or “Function Blocks” to see and select the option “POU Multi-Delete”. And then users will see the POU Multi_Delete window, use the “Select All”, “Inverse Select” and “Deselect All” buttons to select and delete more than 1 POU at the same time. 5-22