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commands in this group have an asterisk (*) at the beginning. For the
commands in this group, there is no hierarchical structure.
Concepts of the command tree
The commands at the top of the command tree are called "root command"
or simply "root." To access lower level commands in the tree, you need to
specify a specific path like a directory path in the DOS file system. After
power-on or reset, the current path is set to the root. Special characters in
messages change the path setting as described below.
Message terminator
A message terminator such as the
<new line> character sets the current path to the root.
Colon (:)
A colon between 2 command mnemonics lowers the level of the current
path in the command tree. A colon used as the first character of a
command specifies the command mnemonic that follows as the root-level
command.
Semicolon (;)
A semicolon does not change the current path and separates 2 commands
in the same message.
The following figure shows an example of how to use colons and
semicolons to efficiently access commands in the command tree.
Using colons and semicolons
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