What does $D$ stand for?

$D$ stands for "Data (OS/2 Planner)"

How to abbreviate "Data (OS/2 Planner)"?

"Data (OS/2 Planner)" can be abbreviated as $D$

What is the meaning of $D$ abbreviation?

The meaning of $D$ abbreviation is "Data (OS/2 Planner)"

What does $D$ mean?

$D$ as abbreviation means "Data (OS/2 Planner)"