viper: Macros and Registers
2.4 Macros and Registers
========================
Viper facilitates the use of Emacs-style keyboard macros. ‘@#’ will
start a macro definition. As you type, the commands will be executed,
and remembered (This is called “learn mode” in some editors.)
‘@register’ will complete the macro, putting it into ‘register’, where
‘register’ is any character from ‘a’ through ‘z’. Then you can execute
this macro using ‘@register’. It is, of course, possible to yank some
text into a register and execute it using ‘@register’. Typing ‘@@’,
‘@RET’, or ‘@C-j’ will execute the last macro that was executed using
‘@register’.
Viper will automatically lowercase the register, so that pressing the
‘SHIFT’ key for ‘@’ will not create problems. This is for ‘@’ macros
and ‘"p’ _only_. In the case of ‘y’, ‘"Ayy’ will append to _register
a_. For ‘[,],',`’, it is an error to use a Uppercase register name.
The contents of a register can be seen by ‘]register’.
(‘[textmarker’ will show the contents of a textmarker).
The last keyboard macro can also be executed using ‘*’, and it can be
yanked into a register using ‘@!register’. This is useful for Emacs
style keyboard macros defined using ‘C-x(’ and ‘C-x)’. Emacs keyboard
macros have more capabilities. 
Keyboard Macros (emacs)Keyboard
Macros, for details.
Keyboard Macros allow an interesting form of Query-Replace:
‘/pattern’ or ‘n’ to go to the next pattern (the query), followed by a
Keyboard Macro execution ‘@@’ (the replace).
Viper also provides Vi-style macros. Vi Macros, for details.
Info Catalog
viper: History
viper: Improvements over Vi
viper: Completion