You are welcome!
Please, take a look
Dev/Docu/Linker.odc
There is also the example of simple WinApi application without dependencies there.
The most difficult step for making the single executable for your app is to take into account all the dependencies.
There is a tool which helps. Select the module name and call from menu Info->Create Tool.
Usually this module, you should select is
Config. However during packing do not forget to take it from Code location (not from System/Code).
Take a look simple demo screenshot, which I just did. I had marked essential places with red.
However usually BlackBox workflow does not assume, that you create single executable.
The concept is:
1. Create your modules and add them to
System/Mod/Config.odc
2. Make a copy of BlackBox IDE and remove all subsytems and modules, those not need for your application (for example there can be Dev, Sql, Obx, Xhtml, Ctl, Docu)
3. Make your own menu System/Rsrc/Menu.odc
4. Recompile BlackBox.exe with your icon file as it is described in Dev/Docu/Linker.odc and rename it.
5. Distribute in archive or make an installation file with InnoSetup utility.
There are two articles about your question:
https://oberoncore.ru/wiki/blackbox/make_exe
http://wiki.oberon.org/blackbox/noappwin
They are both in Russian, however with Google it can be well translated.