I am writing a software user manual so the topic is about possible situations which its users may come across.

Here is an example sentence below:

Enter the window ID which contains an image.

2 Answers 2


This is a perfectly acceptable sentence. The fact that the window is a hypothetical future window doesn't affect the fact that it is a single, definite window within your discourse, and therefore needs the definite article.


The sentence is fine as is, but a little ambiguous.

It might help if you were more explicit. For example:

Enter the ID of the window which contains an image

Or, if "window ID" is a phrase defined elsewhere in the manual

Enter the window ID of the window containing an image

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