Heard some good insights that helped me to grasp subtext better.
Subtext is the act of setting up to strong points and then leaving the reader to fill in the information from their imagination.
This could be like showing a guy punching another guy, then we go to the next chapter. The next chapter starts a few months later, showing the two guys sitting in suits in a corporate boardroom together.
Those are the two strong points
- punching a guy for unknown reasons
- sitting together in a corporate boardroom
The writer hasn't described or explained any of the events that happened between these two points or what lead up to the points. This creates the subtext for the reader to conjecture. This creates the suspense for the writer to reveal elements down the road.