INTRODUCTION

     Basic is a high level language which is based on the following six 
     concepts: commands, statements, functions, variables, operators, and 
     expressions.

     Commands and statements are instructions to the computer to perform a 
     certain task (for example an instruction to load a basic program into 
     memory). The difference between them is that Basic commands are intented 
     to be used in direct mode, while statements should be used in programs. 
     However, in most cases commands can be used as statements in a program if 
     you prefix them with a line number. You can also use several statements as 
     commands by using them in direct mode (i.e. without line numbers).

     A function performs a simple task, based on a given arguments, and it 
     always replies with a value - a result.

     Operators are used for calculations, for determining 
     equalities/inequalities, and for logical operations. For example + is an 
     operator used for addition.

     Expressions are clauses composed of constants, variables, and/or 
     operators. For example A+B*3 is a valid expression.

     This manual's purpose is to provide detail information about presented 
     Basic elements. I hope you find it useful.