In German, a medial capital I is a non-standard, mixed case typographic convention used to indicate gender inclusivity for nouns having to do with people, by using a capital letter 'I' inside the word surrounded by lower-case letters. An example is the word LehrerInnen. With a lower case I in that position, Lehrerinnen is just the standard word for "female teachers".
A pedestrian zone sign on the main street of Vienna's Meidling district, using internal-I FußgängerInnenzone
A sign for dog owners in a Vienna park with two Binnen-I examples
Example of Binnen-I: Radfahrer is "bicyclist", and RadfahrerInnen with the medial capital I is "male and female bicyclists", on a traffic sign in Linz, Austria
The bottom sign PfadfinderInnenheim points to a Scouting residence for Boy- and Girl Scouts in Gablitz, Austria.
Feminism in Germany as a modern movement began during the Wilhelmine period (1888–1918) with individual women and women's rights groups pressuring a range of traditional institutions, from universities to government, to open their doors to women. This movement culminated in women's suffrage in 1919. Later waves of feminist activists pushed to expand women's rights.
Hildegard of Bingen, Medieval religious and medical writer and polymath
Argula von Grumbach, Protestant Reformation movement figure
Sophie Mereau, Age of Enlightenment writer
Die Frau magazine, January 1906, published by the feminist umbrella organization Bund Deutscher Frauenvereine (BDF)