what is $var variable name usage?

[Former Member]

Hi all,

Good day.

In SAP standard program, I saw some variable declared with prefix dollar sign.

example, $lt_var

Any different with normal variable name?

Thanks.

Greatly appreciate for any comment.

[mvoros]

Hi,

good question but unfortunately I do not have direct answer. But I am very interested in answer. I found this about variable naming in ABAP documentation.

As well as these characters, certain special characters are used internal. However, these should not be used in application programs.

and in ABAP objects you can use only

Permitted are letters from "A" to "Z", numbers from "0" to "9" and underscores (_). 

So my guess is that it should be related to special characters. Maybe passing some hints to ABAP compiler.

Cheers