TN3270 Display Options

You can configure the options for running Mainframe Subsystem Applications using a TN3270 emulator in Tools > Options > Micro Focus Tools, and on the TN3270 Display page.

TN3270 Display

Enable Display
Check this to run your Mainframe Subsystem applications in a TN3270 emulator. If you uncheck this, the IDE does not launch or search for an emulator.
Host Access for the Cloud
When selected, an HACloud session is used to run or debug applications.
Restriction: This option does not support regions inside Enterprise Server for .NET, or connecting to Docker containers.
Rumba (Desktop)
Check this to run the applications in a mainframe session of the Rumba+ Desktop outside of the IDE. This is the default setting if you have installed a version of 10.1Micro Focus Rumba+ Desktop earlier than .
External
Check to specify the path to an emulator that supports TN3270, other than Rumba+ Desktop.