pdm allows users to use shortcuts to perform repeated tasks. using a specified options file (via f16), one can tailor these shortcuts to meet their needs. these shortcuts are limited to two alpha numeric characters, and are entered in the input field immediately preceding the library, object, or member. these shortcuts can be repeated en masse for all entries displayed within the relevant pdm screen via f13. this reduces the time it takes to complete common tasks like assigning authority, changing object ownership and several other functions. pdm also recalls last input parameters on a user basis, making repetition and recall easy.