XMM-Newton Science Analysis System
preferences (preferences-0.7) [xmmsas_20060628_1801-7.0.0]
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In the following the notion of SAS task preference parameters is
introduced. A preference parameter, like an ordinary task parameter (see
documentation of package param) is a string-key/value pair through
which the user controls the run time behavior of the task. Unlike the latter
however, preference parameters are user-customizable, i.e., their default
values can be changed by each user according to his personal preferences.
A list of preference parameters that logically belong together can
be put in a preference group with a dedicated name. The name identifies
the group and serves as the key of a new group preference.
Please note that this is a recursive definition: A preference group
is a preference parameter, so groups can contain normal parameters
and other groups which in turn can contain other groups and parameters, etc.
The level of nesting is a priori unlimited.
XMM-Newton SOC/SSC -- 2006-06-28