A CDE Definition
(Free System Resource) In Windows 3.x, the amount of unused memory in various 64K blocks reserved for managing current applications. Every open window takes some space in this area. See Windows memory limitation.
Windows memory limitation
This used to be a major problem for Windows users in the early 1990s with the 16-bit versions of Windows. However, you can still run out of memory if you have too many applications open. The best solution to Windows memory limitations is to purchase more RAM, which is very inexpensive these days. See memory module.
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