the freeBytes
Function; indicates the total number of bytes of free memory, which may not be contiguous. A kilobyte (K) is 1024 bytes. A megabyte (MB) is 1024 kilobytes.
This function differs from freeBlock in that it reports all free memory, not just contiguous memory.
On the Mac, selecting Use System Temporary Memory in the Director General Preferences or in a projectors Options dialog box tells the freeBytes function to return all the free memory that is available to the application. This amount equals the applications allocation shown in its Get Info dialog box and the Largest Unused Block value in the About This Mac dialog box.
None.
This statement checks whether more than 200K of memory is available and plays a color movie if it is:
if (the freeBytes > (200 * 1024)) then play movie "colorMovie"