7fbc9189_ent_Lifecycle___Teachbook_Blog__DESCRIPTION
[STEP] 6 [PROCEDURE] Maintain the program [DESCRIPTION] 
Provide education and support to end users; correct any unanticipated errors that emerge and identify user-requested modifications (enhancements). Once errors or enhancements are identiied, the program development life cycle begins again at Step 1.
» Program Development Lifecycle / Teachbook Blog
DESCRIPTION