-It is never used by end user but you'll need it if
-you're writing own virtual FS. For example you may need something
-similar to wxMemoryInputStream but because wxMemoryInputStream
-doesn't free the memory when destroyed and thus passing memory stream
+It is seldom used by the application programmer but you will need it if
+you are writing your own virtual FS. For example you may need something
+similar to wxMemoryInputStream, but because wxMemoryInputStream
+doesn't free the memory when destroyed and thus passing a memory stream