IEHLIST can list up to 10 partitioned data set or PDSE directories at a time.

The directory of a partitioned data set is composed of variable-length records blocked into 256-byte blocks. Each directory block can contain one or more entries that reflect member or alias names and other attributes of the partitioned members. IEHLIST can list these blocks in edited and unedited format.

The directory of a PDSE, when listed, will have the same format as the directory of a partitioned data set.