Before you begin the installation you should:

1. Determine which of the following you are installing HLASM Toolkit Feature as:
   • Part of a z/VM System Delivery Offering
   • By itself
   If installing HLASM Toolkit Feature by itself, determine the product parts to be installed:

   • COMPID 569623401
   • Feature number 5832

   See What you receive with HLASM Toolkit Feature.

2. Verify that required software (and optional software, if appropriate) is at the level needed. See What you need to install HLASM Toolkit Feature.
3. Ensure you are familiar with VMSES/E. See VMSES/E considerations.
4. Verify that adequate storage is available:
   • Minidisks
   • Shared File System
   See DASD storage required.
5. Obtain latest service updates needed. See Program support.
6. Plan to install Program Understanding Tool onto a workstation. See Planning for installing Program Understanding Tool on Windows.