•Communications Subsystem design provides a description of the Communications/Transactions feature design. An understanding of this design will aid you in designing your applications.

•The Communications/Transactions feature in VA Smalltalk explains how to visually build VA Smalltalk client applications that communicate with remote systems by using the communication parts from the VA Smalltalk Parts palette in the Composition Editor.

•Communications programming with basic VA Smalltalk explains how to work with the Smalltalk communications classes to programmatically construct VA Smalltalk client applications.

•Server programming with basic VA Smalltalk explains how to create a server application with VA Smalltalk / VAST Platform.

•Communications/Transactions feature EHLLAPI support describes EHLLAPI and explains how you can use the EHLLAPI support to build client applications using basic VA Smalltalk classes or VA Smalltalk parts that interact with mainframe applications designed for 3270 terminals.