What OLE is 

• OLE = Object Linking and Embedding

• According to Microsoft:

"OLE was originally an acronym for Object Linking and Embedding.
However, it is now referred to as OLE. Parts of OLE not related
to linking and embedding are now part of Active technology".

(http://msdn2.microsoft.com/en-us/library/19z074ky(VS.80).aspx)

• Let's just say: OLE lets one program use objects from another