Asking for information specifying one or more people or things from a definite set,
Used referring to something previously mentioned when introducing a clause giving further information
a conference in Vienna, which ended on Friday
it was a crisis for which he was totally unprepared
your claim ought to succeed, in which case the damages will be substantial
Asking for information specifying one or more people or things from a definite set
which are the best varieties of grapes for long keeping?
which of the suspects murdered him?
which way is the wind blowing?
Which? is a product-testing and campaigning charity with a magazine and website run by Which? Ltd (formerly known as the Consumers' Association, which is still the official name of the charity). ...
which is a Unix command used to identify the location of executables.
An occurrence of the word which; Who; whom; what (of those mentioned or implied); What, of those mentioned or implied (used interrogatively); What one or ones (of those mentioned or implied); The one or ones that; the one mentioned; Used of people (now generally who, whom or that)
The Hebrew word asher can be translated as the relative participle "which" or "who(m)." It is derived from the parent root shar which is a "cord." A cord is used for attaching one thing to another. ...
is simply a statement of the Pythagorean theorem.
versus that is usually caught by Bill Gates's crude spell checker. Which requires a comma in front of it, that does not.
shows the full path of (shell) commands
If there are any requirements, what are they? Are there any constraints?
Do not use w h i c h to refer to persons. Use w h o or t h a t instead. See also that, which.