Wherefore art thou, aberil?

[Juan_Sali]

Probably this has been settled a long time ago, but still I'd like to understand why the third letter is read as "e" and not something else. This looks to me more like an i with some strange mark over it (something like ĩ or ǐ of sorts). But this is certainly not my area of expertise.

In the starting calendar pages in You are not allowed to view links. Register or Login to view. there is an intensive use of that symbol 
after kl and st, where an e is expected.

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