![](../../_themes/blitz/btzbul1a.gif) | Whats needed to customize Isearch?
![](../../_themes/blitz/btzbul2a.gif) | Isearch is written in C++
![](../../_themes/blitz/btzbul2a.gif) | Documents are C++ objects - data & procedures
![](../../_themes/blitz/btzbul3a.gif) | Already have SGML & HTML, among others
| ![](../../_themes/blitz/btzbul2a.gif) | Object technology allows code reusability, customizing only where differences from existing objects occur | | | |