During a T27 session, the host can send codes to control various functions.
T27 supports the following codes:
Table 4-58
|
Sequence |
Operation |
|---|---|
|
BEL |
Toggles the cursor location alarm on or off. |
|
EOT |
Puts an ETX character at the end of the data transmission. |
|
ESC, ' x |
Subtracts hexadecimal 20 from the specified character x. |
|
ESC, ( |
Transmits the screen to the host. |
|
ESC, . |
Sets or clears a variable tab at the cursor location. |
|
ESC, = |
Locks the keyboard. |
|
ESC, ? |
Toggles the cursor location alarm on or off. |
|
ESC, _, x |
Fills the session window with the specified character. |
|
ESC, D |
Sets the mobile home.This affects where data transmission begins but does not affect cursor movement. |
|
ESC, SI |
Indicates that any subsequent characters should be handled as they normally would. |
|
ESC, SO |
Indicates that any subsequent 8-bit characters should be converted to 7-bit characters. |
|
ESC, SPACE, C |
Displays the ASCII character set supported by the terminal emulator. |
|
ESC, SPACE, V |
Displays the T27 version number. |
|
ESC, Y |
Disables lowercase characters. |
|
ESC, Z |
Enables lowercase characters. |
|
ETX |
Inserts an end-of-text character at the DCP. |
|
SI |
Indicates that any subsequent characters should be underlined. |
|
SO |
Indicates that any subsequent extended characters should appear in reverse video. |
|
VT |
Enables vertical tabs (if they weren't already enabled) and moves the cursor to the next vertical tab. |