user available memory

基本解释

If a mouse is installed in a computer, then the available memory space of user will reduce.
如果计算机安装了鼠标，用户可利用的内存空间就会减少。
If additional datapoints existed after this user count, no additional memory was available to process the additional users.
如果在这个用户数量外还存在额外的数据点，那么就没有额外的内存用于处理额外的用户。
Lotus Domino begins using the first two available segments for user heap memory (0x3 and 0x4). Lotus Domino begins using the last segment (0xF) for shared memory.
Lotus Domino 最初将前两个可用的段（0x3 和 0x4）作为用户堆内存，将最后一个段（0xF）作为共享内存。