Z
Z sets the current line pointer ".". If you specify an address, Z sets the current line pointer to that line. Otherwise, Z leaves "." where it is (which means Z does nothing). This is the equivalent of a "no-op" in a programming language.
Many other commands have names made up of Z followed by another letter. These are known as zap commands. Because of the possibility of confusion, there must be a space, tab, or new-line character immediately following the Z of the Z command.
The other Zap commands are listed below.
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