System 7.1P2

System 7.1P2 was released in April 1993 for the Macintosh Performas 430 & 450. System software version 7.1P2 supports all the previously supported Macintosh Performa models, and has all the features described for 7.1, 7.0.1P, 7.1P, and 7.1P1, with the following modifications:
 * Eliminates the system freeze when you click on the sea horse in Mouse Practice. This was corrected by reducing the application preferred memory size from 5000K to 2500K.
 * Allows setting Monitors control panel to any number of colors or black and white selection. The 7.1P1 version reset the system to 256 colors upon restart.
 * Control panels "exercised" (opened and closed) during Custom Mac process

Many control panels normally have compressed resources. This makes it easier to fit all the necessary files on system software floppy disks. Once a control panel is opened, the resources are decompressed, and then written back to disk decompressed. This process can take quite a bit of time (minutes, on a Performa 400), and is most visible with the Monitors control panel.

If a user shuts down their system while the decompressed resources are being written back to disk, it can lead to problems. By providing users with control panels which already have decompressed resources, it should speed things up, reducing the risk that a customer might think something is wrong and want to shut down their system improperly.
 * The Read Me document now very clearly provides information about the importance of the proper shut down procedure.

External References

 * System 7: Performa Versions Compared