| ClientHostScreen | Handles the client host screen information and its synchronization between the server and the client. | 
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| EmptyHostSession | The empty host session peer. | 
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| HostField | This class holds the definition of a the host fields on the screen of the terminal connector. | 
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| HostFields | All host fields of a screen are accessed using this class. | 
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| HostKeyEvent | Key event for Host, like Java AWT's KeyEvent, i.e. | 
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| HostPopupWindow | This class identifies pop-up windows on a host screen. | 
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| HostScreen | This class does everything required for a host screen. | 
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| HostSendKeys | Handles conversion of H-L-L-A-P-I send keys to indexed values defined in this class. | 
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| HostSession | The 3270 or 5250 (or EE) host session. | 
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| HostSessionManager | Handles the connection for an end point that uses multiple connections to a terminal host, Mainframe (3270), AS/400-iSeries (5250) and EE (Emulator-Emulator, recorded 3270/5250 sessions with a little screen logic). | 
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| HostState | This class is used to get the text to display in the status bar for the host terminal session. | 
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| KeyboardRemapper | The keyboard remapper that maps KeyEvents to Send Keys. | 
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| KeyboardRemapperAugmentation | The key augmentation maps a key with the shift, control and alt keys to a particular send key. | 
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| TerminalPlugin | Tag class for plug-in ID. | 
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