qbasic.hlp (Topic list)
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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Duplicate definition
This error occurs if you try to change the dimensions of a
static array while your program is running. To correct this,
declare the array as dynamic using the REDIM statement.
 
This error also occurs if you try to change the dimensions
of a dynamic array using the DIM statement without first
deallocating the array. To correct this, add an ERASE
statement before dimensioning the array.
 
ERR code: 10