QRY/EQQ/SPQ/VQQ/RQQ - Cancel query

Of particular interest is the case where the inquiring user formulates the query online at the terminal of one system and waits while that system sends the query to another. He gets the response and displays it at their terminal. When the user is formulating such a query she may only have limited understanding of what data is available for a given patient. Sometimes the user's preference would be to make a simple query such as give me recent data in reverse chronological sequence rather than give me data for yesterday, since there may be some data available for today, or there may be data from two days ago that is of interest. The user will look at the data returned and simply quit looking at it after he or she has found the part that is of interest. (The time frames or the sort sequence may differ, or the user may wish to impose some selectivity on the response, but the general principle remains the same. The user would prefer to make a vague statement of the interest, have the data presented in order of decreasing likelihood of interest, and quit when he or she has seen enough.)