What are the available linker flags and it's use in iOS ?

Here I have a list of most frequently used other linker flags in iOS mentioned below.
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-ObjC, -all_load, -force_load

1. What is the use of -ObjC linker flag ?
2.What is the use of -all_load ?
3. What is the use of -force_load ?

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 -ObjC flag causes the linker to load every object file in the library that defines an Objective-C class or category. It will basically result in a larger executable (due to additional object code loaded into the application), it will allow the successful creation of effective Objective-C static libraries that contain categories on existing classes.

-all_load flag forces the linker to load all object files from every archive it sees, even those without Objective-C code.

-force_load option must be followed by a path to an archive, and every object file in that archive will be loaded.

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