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NeXtMidas Training
Option Trees
Using an Option Tree
The Path
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- The Option Tree Path:
- The path is the list of option trees that are in use.
- The SYS option tree must always be included.
- The path is ordered such that option trees with higher standing appear first.
- If a command typed in matches commands in multiple option trees the one in
the option tree listed first will be used.
- This feature can be overridden by explicitly indicating the option tree
to be used. This is done by appending "
;<opt> " at the
end of the command name (e.g. FFT;SYS ).
- The SYS option tree is always last.
- The
OPT table maps the name of each option tree to its
location on disk (or on the web).
- Option trees that come bundled with NeXtMidas and those linked to under
$NMROOT/nxm/ do not need to be included in the OPT
table. (More on this later.)
Don't Make This Mistake: |
Note: Option trees can not be named PATH,
CLASSPATH, orNXM since these are special
reserved entries in the OPT table. Option tree names must be
unique. Additionally the use of the names OPT
(the generic name used in many examples)
and XM (used when linking to X-Midas) should be avoided.
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