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== Details ==
An 'alias' acts like a custom command. It runs the assigned text as a script, which can contain a single-word command, statement, or script. Is used to create a custom command in the current context.
Aliases do not have any parameters and will run the command, statement, or script verbatim. If for example, an alias named 'bob' is set to 'echo', it will always run exactly 'echo' which will print nothing, even if you run 'bob "some text". Here the second parameter was ignored.
Thus, aliases act like simple static macros. But when run they can do anything a script in the same context run by any other means could do. And because aliases are treated like commands, they can use the special key state associations. By default, only aliases in the 'global' context will be found by key bindings using 'bind'.