HP49-50G : Black rectangle variable

[Gil]

Suppose that I am on variables menu.

Suppose that I want that only 5 variables appear by page.

- On 1st page of that menu, for instance:
A1, BLACK_RECTANGLE, A3, A4, A5, A6.
- on 2nd page:
B1, B2, B3, B4, B5 BLACK_RECTANGLE.

My "solution" is to have
instead of BLACK_RECTANGLE
"" '¶¶' STO
"" '¶¶¶' STO
Then {A1, ¶¶, A3, A4, A5, A6, B1, B2, B3, B4, ¶¶¶} ORDER.

Is there a better solution to have real, black rectangle instead of my special characters?

Thanks in advance for your help.

Regards,
Gil Campart