Epsilon User's Manual and Reference >
General Concepts >
You can prefix a numeric argument, or simply an
argument, to a command. This numeric argument generally functions
as a repeat count for that command. You may enter a numeric argument
in several ways. You may type Ctrl-U and then the number. You can also
enter a numeric argument by holding down the Alt key and typing the
number using the number keys across the top of the keyboard.
Then you invoke a command, and that command generally repeats that
number of times.
For example, suppose you type the four characters Ctrl-U 2 6
Ctrl-N. The Ctrl-N key runs the command named down-line,
which moves point down one line. But given a numeric argument of 26,
the command moves point down 26 lines instead of 1 line. If you give
a numeric argument of -26 by typing a minus key while typing the 26,
the down-line command would move point up 26 lines. You
can get the same effect as Ctrl-U 2 6 Ctrl-N by holding down the Alt
key and typing 26 on the main keyboard, then typing Ctrl-N. (Remember
to release the Alt key first; otherwise you'd get Alt-Ctrl-N.)
You can give a numeric argument to any Epsilon command. Most
commands will repeat, as our example did
above. But some commands use the numeric argument in some other way,
which can vary from command to command. Some commands ignore the
numeric argument. We describe all the commands in the chapter titled
"Commands by Topic".
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