Of course, the power of the system requires a comprehensive
internal CAD data model. To keep track within SISCAD-P, the
user has a lot of information at his disposal.
The most important source of information is the user-info, which
may be activated with the corresponding icon in the main menu.
The user may either have the requested information
displayed selectively or for a special type of objects
the whole range of information regarding all suitable objects.
Here all information is offered by the definition of the object,
its relations to other objects and its parametric constraints.
In case other objects are mentioned within the info text, the
user may visualize them by simply clicking the corresponding text
or may have the desired information displayed.
For dimensioning objects additional information is provided,
because a lot of parameters directly influence the dimension
image. Altogether, the user may completely survey which construction
logics is saved in its construction at the moment being. This
is very helpful when system reactions are not as understandable
as they should be.
Within the menu parametric info there is a function SHOW
(exclamation mark),
which informs about the degrees of freedom of the several
objects with the help of displaying the geometric elements of
the active parts in color. The number of the degrees of freedom
always is indicated for the part currently worked at when the
corresponding menu is activated.
In addition, the system offers brief information where new
data may be created. Example: with the CAD-command
REMEMBER PARALLELISM all lines are displayed for which the
constraint parallelism is saved. Within the calculator all
functions and variables defined up to this moment are displayed.
If the user tries to construct an inconsistent datamodell (e.g. with
contradictional dimensions), the CAD-command is not only rejected but
the objects concerned are displayed in color.