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INT 88 - APL*PLUS/PC - CREATE OBJECT OF ARBITRARY RANK OR SHAPE
        AL = 00h
        BX = STPTR of the variable to be assigned
        ES:SI -> model of type, rank, and shape (see below)
Return: ES:DI -> first data byte of object
        DX:CX = number of elements in the object
Format of shape model:
Offset  Size    Description
 00h    BYTE    type
                01h character (2-byte dimension sizes)
                02h integer (2-byte dimension sizes)
                08h floating point (2-byte dimension sizes)
                11h character (4-byte dimension sizes)
                12h integer (4-byte dimension sizes)
                18h floating point (4-byte dimension sizes)
 01h    BYTE    rank
 02h    WORD/DWORD first dimension of shape
 N      WORD/DWORD second dimension of shape
        ...