Where can I find TTY and curses documentation for Unix?

Question

I'm working on automation tools for an ERP program running on SCO Unix.
See my questions on Expect:

• (Tcl/Expect) clear screen after exit
• Expect - get variable from screen region based on row and column

Where can I find (either locally or on the web) resources for understanding what control characters are used in a session, and more specifically, determining a field location on the screen during an interaction with the ERP program?

Answer 1

The specific control characters for a given terminal type are stored in the terminfo database. curses reads the value of $TERM when initializing and uses it to find and extract the relevant sequences for the various terminal operations.