The present invention is a system and method for computer optimization of content and reusing documents. The invention provides integrated user interfaces to facilitate reuse of static or dynamic content. The system further includes on a display, a first window and a second window where the system includes programming instructions operable to control the processing unit to output to the first window the content of memory. The content output to the first window is simultaneous to output being displayed in the second window of the separate program. Each of these programs may reside in the same memory space or different memory space. The separate program can provide documents or content to be used in the first window. The system further includes programming instructions operable to transform selections retrieved from documents of the second window into content for the first window.