what does "var elements" (optional) mean in UDF creation dialog?

var elements means things you can vary during the UDF placement, features dimensions, placement dimensions

and many other.

Hello @ifomenko

 picture bellow describes some basics about symbols grouping and variables. More complex symbols are defined with thise two abilities in order to reach predefined statements.

Variables:

- name of text string that will be variable is defined between slashes - \\

- define preset values in SYMBOL DEFINITION ATTRIBUTES window (you can also lock ONLY PRESET VALUES)

 Grouping:

- more complex symbols are like "hairy pile" of variable texts (see purple frame in picture above)

- due SYMBOL DEFINITION ATTRIBUTES you can filter what to show / hide

- due Variables you can set desired value for specific part of symbol, that has been filtered in grouping

Conclusion:

Variable is used for more complex symblos with predefined values.

Hope it helps

Regards

@mbonka