_std/defines/mainframe_defines/_errors.dm 
| ESIG_SUCCESS | The command was carried out successfully. |
|---|---|
| ESIG_GENERIC | The command could not be carried out successfully. |
| ESIG_NOTARGET | The command could not be carried out successfully, as a target was required and could not be found. |
| ESIG_BADCOMMAND | The command could not be carried out successfully, as the command was not recognised. |
| ESIG_NOUSR | The command could not be carried out successfully, as a user was required and could not be found. |
| ESIG_IOERR | The command could not be carried out successfully, as a result of an I/O error. |
| ESIG_NOFILE | The command could not be carried out successfully, as a file was required and could not be found. |
| ESIG_NOWRITE | The command could not be carried out successfully, as write permission was required. |
| ESIG_USR1 | User defined signal 1. This indicates an application-specific error condition has occured. |
| ESIG_USR2 | User defined signal 2. This indicates an application-specific error condition has occured. |
| ESIG_USR3 | User defined signal 3. This indicates an application-specific error condition has occured. |
| ESIG_USR4 | User defined signal 4. This indicates an application-specific error condition has occured. |
| ESIG_DATABIT | If a command is expected to return a number, it will be signed with the databit to signify that it is not an error condition. |
Define Details
ESIG_BADCOMMAND
The command could not be carried out successfully, as the command was not recognised.
ESIG_DATABIT
If a command is expected to return a number, it will be signed with the databit to signify that it is not an error condition.
ESIG_GENERIC
The command could not be carried out successfully.
ESIG_IOERR
The command could not be carried out successfully, as a result of an I/O error.
ESIG_NOFILE
The command could not be carried out successfully, as a file was required and could not be found.
ESIG_NOTARGET
The command could not be carried out successfully, as a target was required and could not be found.
ESIG_NOUSR
The command could not be carried out successfully, as a user was required and could not be found.
ESIG_NOWRITE
The command could not be carried out successfully, as write permission was required.
ESIG_SUCCESS
The command was carried out successfully.
ESIG_USR1
User defined signal 1. This indicates an application-specific error condition has occured.
ESIG_USR2
User defined signal 2. This indicates an application-specific error condition has occured.
ESIG_USR3
User defined signal 3. This indicates an application-specific error condition has occured.
ESIG_USR4
User defined signal 4. This indicates an application-specific error condition has occured.