It shows one or several messages with the position(s) of the letter searched for (the variable buchstabe) in the word wort.

I would probably have to read a little bit more about Delphi to fully understand why this works as were only using Delphi very superficially in school, but it definitely works.

The form ( TForm1 ) is also an object, and anything which works with its contents should also be within that object to be able to access its members.

Imagine a unit which has 5 different objects - each one needs to be self-contained from each other.

As TStrings is a common base for TComboBox.Items, TListBox.Items, TMemo.Lines and is used in many other places, this seems like the most flexible way to accomplish what you want to do.

Its not tied to a specific form, so its more flexible and able to be reused elsewhere.

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