Slash mark
Do not use constructions that contain a slash mark to indicate a choice, such as either/or and he/she. However, and/or is all right to use if you have no other choice. Localizers and non-native English speakers may not know whether the slash mark indicates a choice, indicates that the two words are synonyms, or indicates that the two words are part of a single construction, such as client/server.
Do not use a slash mark as a substitute for or. If the user interface uses a slash in this way, follow the interface in describing the label, but use or in describing the corresponding action.
Microsoft style
Click Automatic trapping to add or remove a check mark.
Not Microsoft style
Click Automatic trapping to add/remove a check mark.
Use a slash ...
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