Thank you for your message.
A hashtag is represented by the following symbol: #.
By adding a hashtag in the subject line, you can categorize your message. For example, for this message, we assigned the category of “#Help.” If your message was related to Polish research, you could add the hashtag of #Poland in the subject line. In this way, other researchers would know what category your post was related to.
I hope this is helpful. Please let me know if I can ever be of help.
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