Attachmate Verastream Host Integrator v7.7
Event Handlers API Documentation

Event handling is a feature in Verastream Host Integrator that extends the capabilities of models by allowing you to define specific events that suspend the interpretation of a model and turn control over to user-supplied procedural code.

See: Description

Packages 
Package Description
com.wrq.apptrieve.agent  
com.wrq.apptrieve.appconn  
com.wrq.vhi.script.api
This is the com.wrq.vhi.script.api package summary.
com.wrq.vhi.script.api.command