Variation between ‘impostors’, such as capital ‘I’, lowercase ‘l’ and number 1 – many fonts make these near-identical, which ...

in the curve at the base of the lowercase L’s, the serifs on the uppercase I’s, and the slash through the zeros. Twitter has made some alterations to its font—specifically in site user’s ...

“Fonts that are busy ... can be difficult to distinguish between the capital letter “I” and the lowercase “l” with Calibri, and punctuation is small. It’s also important to keep ...

In most sans serif fonts, “the capital ‘I’ is a line, and the lowercase ‘l’ is a line,” Mr. Friedman said. “The weight is slightly different, but most people can’t see it.

Everyone has an opinion about fonts, but Helvetica has long reigned ... Changes include clarifying the difference between a lowercase l and a capital I, as well as an updated @ symbol.

but serif fonts help distinguish between a capital I and a lowercase l. The letters q, p, d and b are all shaped identically but rotated, and some have argued serifs make them easier to identify.