Display text in another window named name. If the window doesn't exist, it is created. If a text string is specified, it is displayed in the window.
WINDOW examples
#WIN tell create a new window named 'tell'.
#FORALL @eqlist {#WIN status %i} creates a window called "status" if it doesn't already exist. Loop through the string list @eqlist and display the resulting items in the status window.