set-needs-execution-message in drscheme:unit:definitions-text<%>

This method, when called, puts this drscheme window in a state such that interactions submitted to the REPL will trigger a yellow warning message. The state is reset when the program is next Run.

• (send a-drscheme:unit:definitions-text set-needs-execution-message msg) -> void
     msg : string

  Records msg and uses it the next time the user submits an interaction (unless the Runs first).