ired after the last statement of a block, adding one adds a "null statement" to the program, which is ignored by the compiler.</p>

<p>The programmer has the freedom to define other commonly used data types (e.g. byte, string, etc.) in terms of the predefined types using Pascal's type declaration facility, for example:</p>

<pre>
  type
  byte        = 0..255;
  signed_byte = -128..127;
  string      = packed array[1..255] of char;
</pre>

<p>If you are using decimal (real type) numbers, you can specify the