Macros are lists of commands. Any series of operations which has to be performed frequently is a good candidate for being a macro.
Macros can be written manually: they are just ASCII files, each command
occupying a line (lines starting with any non-alphabetical character are
considered comments). But the real power of macros is that they be recorded
during the normal usage of ne
. When the recording terminates, the
operations which have been recorded can be saved for later use. Note that each
document has a current macro (the last macro which has been opened or recorded).