Algebrus Version 1 descriptions Algebrus is a powerful software for scientific & general purpose calculations. It provides user with numerous mathematical & analysis functions & allows unlimited extension of its functionality by means of user-defined types operators routines & libraries. Extendibility is based on a built-in simple to learn & yet powerful programming language XPascal. Algebrus can be used both as a simple "evaluate-while-typing" calculator & as a powerful mathematical analysis application which includes 2D & 3D graphic plots of functions & data command line execution console & a syntax-highlighted XPascal editor as a part of the integrated development environment. Algebrus has the following major features. Calculations: - Vector & matrix operations - 2D & 3D graphic plots of functions & data - More than 50 built-in mathematical routines - User-programmed procedures & functions - Solving of linear algebraic systems - Solving of ordinary differential equations User interface: - Compact & full user interface modes - Simple graph plotting user interface - Exporting graphics in standard formats - "Evaluate-while-typing" mode - Decimal binary & hexadecimal integer formats - Syntax-highlighted XPascal editor - Syntax-highlighted command console - Context based help search - Highly customizable user interface - Preloading external libraries XPascal Programming language: - Native support for vectors & matrices - User-defined operators - Complex structured user-defined types - Chained assignment & relational expressions - Dynamic & static arrays - Efficient array access loop statements - Rich on high level routines for scientific analysis - Easy to learn simplified yet powerful grammar