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Making "Backspace"

First thing which probably will come into your head is: "How do I delete characters?"

Here we need to apply a little trick :)

For example, we have source text = "Hello world".

Its length is = 11.

To determine the length of text, use len(text)

Essence of our trick: we will take all len(text)-1 symbols in text. So it will take original text, but without last symbol.

left(source.text,text.length) will help us.

For more details see here:

https://www.scirra.com/manual/78/expressions

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