1.   A second DIM statement may be used, or, for small amounts of storage, you can use DEFM with a dummy string.

2.   You can reserve memory by using a special version of the DIM statement or by moving HIMEM down.

3.   The DIM statement is used to declare arrays.

4.   A DIM statement is used to reserve an area of memory which the interpreter will then not use.

5.   The variable in the DIM statement is set by BBCBASIC to the start address of this memory area.