What does... RUN FILENAME in a Batch File mean ?

[Mel_3]

I'm trying to get an old system to work and it seems to be having a problem with a line in a batch file... the line is...

RUN MSTRMENU

I get the error message...

Can not find application SHELL

Question 1: What is the RUN command? Is it a Batch or a DOS command? I can't find reference to it either way so I don't know what it does in the batch file.

Question 2: What does the error message mean?

Thanks for any help.

PS
For reference the line...
SHELL C:\dos\command.com/E:900/P
is the last line in the config.sys file.

[DccD]

AFAIK run is not a DOS command. Maybe it is an executable file (.exe or .com). In that case it must be in the same directory where the batch is started or in the PATH. Try to search for any run.* file.