Could you elaborate on your design and explain what the acronym's mean? 
Any:    A pointer to anything.
Refco:  Reference counter.
Fl:     Flags.
T:      Type.
PVX:    Pointer value (a pointer to a string).
CUR:    Length of above string.    
LEN:    Size of allocated area for string.
IVX:    Integer value.
For an SvIV, the PVX, CUR and LEN values are unused.

For much more details, visit Gisles PerlGuts Illustrated.

Abigail

In reply to Re: Number size equal to one byte by Abigail-II
in thread Number size equal to one byte by Anonymous Monk

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