$ECODE

1995 Version of ANSI (Equivalent to Current ISO Version) of Standard

contains information about an error condition. This information is loaded by the implementation after detecting an erroneous condition, or by the application via the Set command. When the value of $ECode is the empty string, normal routine execution rules are in effect. When $ECode contains anything else, the execution rules in 6.3.2 (Error processing) are active. When a process is initiated, but before any commands are processed, the value of $ECode is the empty string.

The syntax of a non-empty value returned by $ECode is as follows:

   , L ecode ,

Note: ecodes beginning with:
   M   are reserved for the MDC
   U   are reserved for the user
   Z   are reserved for the implementation
All other values are reserved.