This is awk for DOS from the Thompson Toolkit 2.0.

It supports DOS-specific functions, memory beyond 640kb, and it can
compile AWK programs to .EXE files.

From: <gopher://tilde.pink/1/~bencollver/ia/details/thompson-toolkit-v-2.0>

See also:

readme.txt, Documentation section:

<gopher://tilde.pink/1/~bencollver/files/dos/devel/awk/>