Your 3270/5250 emulation software enables you to create multiple logical 3270/5250 terminal sessions. ECS subroutines allow ESL to control one or more of these sessions.

This chapter discusses the following 3270/5250 session and screen concepts:

•Session Names

•Session States

•Field-Oriented and Line-Oriented Screens

•Characteristics of Field-Oriented (Formatted) Screens