brrrr...

// this is a .wdl question
why its wdl question?

If you're using c-script(files, named *.wdl), then you may write it in the "Starting with Gamestudio", or "A7 Engine", or somewhere else in C-script part

If you're using lite-c(*.c files) and you want to use *.wdl files as "The predecessors to lite-C", then you may write in the "C-Script and WDL "

It you're question is about lite-c (as i can see), and not about using *.wdl with *.c, you may write in the "Lite-C Programming", so i moved your post there