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Refresh a ReGIS Graph with New Characteristics

After you generate a ReGIS graph to the SYS$OUTPUT device, you receive the following prompt:

Type <CR> to continue
If a broadcast message disrupts the display of the ReGIS graph you can refresh the display with the following procedure. You can either enter a C (for color), P (for pattern), or L (for line) to regenerate the graph currently on the screen with a changed characteristic. The DCL qualifiers that obtain these characteristics are as follows:
/FORMAT=ReGIS=CHARACTERISTIC=COLOR
/FORMAT=ReGIS=CHARACTERISTIC=LINE
/FORMAT=ReGIS=CHARACTERISTIC=PATTERN      

With each method, it is possible to redraw the current graph if a broadcast message disrupts the display.