_system on mac?

The system_ command (sry .. misspelled in title), does it work on a Mac? I want my application to call another application in the same folder. Also, should I use a file extension, or could I call the application without it ?
For example:

system_ "program2"

Bump, I found that I could use system_ this way:
system_ ("open program.app")

I have no Mac to test it, so I would like to know if it is possible to put two .app files in one package and then call one from the other using system_ ?

Doesn't the Mac version come with FreeProcess? How does the Mac version of the IDE work?

I have no Mac, so I couldn't tell. :/
I'm developing my app on a PC, so I can't test my programming.
It will be enough to launch the other application, while app1 waits for it to finish, that is why I prefer using system_
I've been reading up a bit, and now what I understand is that a MacOS application is actually a folder, with an info file in it that tells the computer what the main executable is.

I got the Command working with:
system_("open BirdDemo.app")

i had a test.app and a BirdDemo.app in same folder.



i have the answer to that question. :o)

First i compiled the BirdDemo.
Then i compiled a test.bmx:

system_("./test.app/Contents/MacOS/BirdDemo")

i copied the BirdDemo.app/Contents/MacOS/BirdDemo to
test.app/Contents/MacOS/BirdDemo

started test.app ... and it works :o)