If SHARE variable is not enabled, ARCPLOTW, ARCEDITW, and DRAWW run about 10% faster. In addition, drawing is smoother and the hourglass cursor does not flash on and off as frequently. Loading most unpacked programs is also faster. One copy of each program can be run simultaneously.
If SHARE is enabled, you can run multiple copies of all programs, though only one is allowed to access a coverage at the time. You can't zoom in while the graphics are still drawing.
Starting two programs (double-clicking their icons) in quick succession might yield 'Clipboard in use' or a 'Sharing Violation' on the second one. In this case, the second one will be halted. Cancel the second one, and once the first has finished coming up you can re-launch the second one.
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