What does lebel "a" in the diagram mean?

UML
1

there are some "a"s attached to the graphs, what does this “a” mean?

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2

It shows that you’re looking at an auxiliary view of the object. If you put the object into more than one diagrams (or move its master view to the Model Explorer) the auxiliary view will have a lowercase “a” and the master view will have an uppercase “M” to indicate the view type.

3

Hi trypsin,

First of all, thanks Gemisigo for answering. Yes, ‘a’ is the visual indicator of an auxiliary view of a model, while “M” represents the master view. For more details, please read the article below:

Hope this helps.

Best regards,
Jick Yeung

4

thanks, your information helped me.

5

Hi Trypsin,

You are welcome. Feel free to contact us again if you have any other questions.

Best regards,
Jick Yeung