MDIware (Multiple Document Interface) - is a framework for cloud programming and windows management.
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Multiple Document Interface in vb6.0
A multiple-document interface (MDI) is a graphical user interface in which multiple windows reside under a single parent window. Such systems often allow child windows to embed other windows inside them as well, creating complex nested hierarchies. This contrasts with single-document interfaces (SDI) where all windows are independent of each other.