IFCMD – Default step to consider for command return code checking
The @CMD function is used to check
the return code of a previous command. If the command label is not
specified, the default command to check is determined by this OPTIONS keyword.
LAST_RC- Refers to the immediately preceding command.
LAST_XRC- Refers to the last command that was run and was not flushed. This is the default.
MAX_RC- Refers to the command that issued the maximum return code.
MAX_RESP- Refers to the command that issued the maximum response code.