The keyboard mapping for x3270(1) is established by the X Window System resource named
x3270.keymap.pc
which appears in the X Window System application defaults file
/usr/X/lib/app-defaults/X3270
This file is supplied with FLEX-ES and is installed automatically during the standard installation procedure.
Note that this keyboard mapping applies only to the x3270(1) TN3270 protocol front-end terminal emulation program as supplied with FLEX-ES. It does not describe keyboard mappings that may be used with x3270(1) elsewhere, and it does not describe the keyboard mapping used with the non-X Window System tn3270(1) TN3270 protocol front-end terminal emulation program also supplied with FLEX-ES.
It is possible for the system administrator to modify the keyboard mapping established in this file. This should only be done by administrators experienced in the configuration of X Window System resources and keyboard mappings. If this is done, it is strongly recommended that a backup copy of the unmodified file be kept.
The default keyboard mapping is given in the tables below. It associates X Window System keystrokes and keystroke sequences with x3270(1) functions (more technically, with X Toolkit "Actions"). Ordinary alphanumeric keys have their ordinary interpretation, and are not listed below. Terms that appear in bold type name keys; for example, Tab names the "Tab" key. The X Window System Meta key does not appear as such on PC keyboards. In the standard installation procedures, the X Window System Meta key has been remapped to the left Alt key.
There are four tables below:
| Keystroke(s) | x3270 Function | Interpretation |
| Backspace | Left2() | Move the cursor left two positions. |
| DownArrow | Right() | Move the cursor down one position, wrapping if necessary. |
| Home | Home() | Move to the first unprotected field on the screen. |
| Meta h | Left() | Move the cursor left one position. |
| LeftArrow | Left() | Move the cursor left one position. |
| Shift LeftArrow | Left2() | Move the cursor left two positions. |
| Tab | Tab() | Tab forward to the next field. |
| Meta Return | Newline() | Move to the first column of the next line, if it is unprotected. |
| If it is protected, move to the first unprotected field beyond it. | ||
| RightArrow | Right() | Move the cursor right one position. |
| Shift RightArrow | Right2() | Move the cursor right two positions. |
| Shift Tab | BackTab() | Tab backward to the previous field. |
| UpArrow | Right() | Move the cursor up one position, wrapping if necessary. |
| Keystroke(s) | x3270 Function | Interpretation |
| Meta c | Clear() | Clear the terminal screen. |
| Del | Delete() | Delete a character at the current cursor position. |
| Meta f | EraseEOF() | Erase to the end of the Field. |
| Meta Home | Clear() | Clear the terminal screen. |
| Meta i | Insert() | Set insert mode. |
| Meta n | EraseInput() | Erase all input. |
| Return | Enter() | Send a "Return" escape sequence to TN3270. |
| Keystroke(s) | x3270 Function | Interpretation |
| F1 | PF1() | The Program Function 1 key. |
| F2 | PF2() | The Program Function 2 key. |
| etc. | etc. | etc. |
| F12 | PF12() | The Program Function 12 key. |
| MetaF1 | PF13() | The Program Function 13 key. |
| MetaF2 | PF14() | The Program Function 14 key. |
| etc. | etc. | etc. |
| MetaF24 | PF2(4) | The Program Function 24 key. |
| Keystroke(s) | x3270 Function | Interpretation |
| Meta 1 | PA1() | The Program Attention 1 key. |
| Meta 2 | PA2() | The Program Attention 2 key. |
| Keystroke(s) | x3270 Function | Interpretation |
| Meta d | Redraw() | Redraw the terminal screen. |
| Meta m | FieldMark() | The FieldMark key. |
| Meta r | Reset() | Reset the terminal lock. |
| Meta s | SysReq() | The SysReq key. |