Rarely do people actually say what they mean. A woman walks into the living room, says to her husband “I’m upset about what you said last night at dinner.” When does that happen? … Right. Now you’ve got a scene. The image of her pacing during the mundane conversation, biting her nails and playing with her hair will say a lot more than her words: this is about the character.
In this article published over at raindance.org, Baptiste Charles-Aubert talks about the complexities of writing sub text and reviews Writing Subtext, by Dr. Linda Seger is published by Michael Wiese Productions.
Well worth a quick read if you ask me!