Most applications are 32-bit-compatible and should work when your Macintosh
is running in 32-bit mode. In 24-bit (the default) mode, the computer can
run both 32-bit compatible and non-32-bit compatible software.
Those high-end users who specify the 32-bit addressing capability (through
the Memory Control Panel) should ensure that their software is 32-bit
compatible. Most current releases of application software are 32-bit
compatible, and those that aren't should have upgrades available before too
long.