version 3 by Jon Ingold
Section 3 - Using Text IO Control to read in command in a sub-window
Before printing the command prompt when the current text input window is the key-window:
clear the current text input window.
Before reading a command when the current action is restarting the game or the current action is quitting the game:
say line break.
After reading a command when not Inputstyling:
shut down the echo stream of the main-window;
say ">[player's command in upper case][command clarification break]";
echo the stream of the main-window to the transcript.
The command-pasting terminator is "[run paragraph on][if we are writing a transcript][echo stream of current text input window][line break][stream of current text input window][end if]".