Hello - Looking over FASM examples. I saw this Directive :

section '.data' data readable writable ; data definitions

I am coming from C but I did Debug code for COM files long ago.
I am familiar with .data but the rest is new.

So then I started looking for more infor on this directive in the documentation, but was not luck. Is there a better place to read up on this.. Is it unique to FASM or should I look into the MASM documentation....

The directive section, to create a new section in the file, and in memory when it is loaded into RAM.

".data" is an arbitrary name. You can change this and it has no effect.

The other parts are attributes for the memory access permissions when the code is loaded into RAM.

".data" there is no directive in fasm. But you can use some types of macros for fasm, which will add this functionality to the program code.