# List of used symbols [closed]

I would like to create a list of used symbols.

Sample text:

Formulas for calculating *A* use letters which are identified below. For example the formula for the area of a circle specified by *r* will look like this: *A* = π *r^2*, where π is mathematical constant.

And a list of used symbols should look like this:

Latin upper case letters

A area

Latin lower case letters

r circle radius

Greek lower case letters

π mathematical constant

Any idea how to this? (Not manually, no cross-references needed, just select some symbol during writing texts, add them description and after document is completed generate list of symbols).

Lukas